Alternatives to Postmastery

Reliable cloud-based email hosting includes features such as spam filtering, antivirus protection, ample storage, and webmail access. It seamlessly integrates with Outlook as well as various other POP3/IMAP clients. For users with high sending needs, it offers a robust SMTP service designed for responsible senders. Additionally, there is an outbound relay service tailored for transactional emails, marketing campaigns, newsletters, and diverse applications. The infrastructure supports dedicated email servers, clustering, and multiple IP load balancing to accommodate high-volume senders effectively. With a fixed monthly fee, users benefit from unlimited sending capabilities and reputation monitoring. Greatmail stands out as an email service provider (ESP) focused on delivering business-class email hosting, SMTP hosting, and specialized email servers. Furthermore, for ISPs, software developers, and cloud architects, we also create custom solutions featuring dedicated IP servers and load-balanced configurations with multiple servers to meet specific processing needs. This commitment to adaptability ensures that all clients receive the best possible service, tailored to their unique requirements.

Pinpoint email issues before you hit "send". On average 51% of emails never reach the inbox! So where do they go? 26% go to spam or junk folder and 25% are never delivered. We have every tool you need to maximize inbox deliverability. Get a report of any potential delivery issues with your outgoing messages. Audit your sending IP and Domain against 50+ industry blacklists. Monitor, capture, separate, and reject any email pretending to be you. Track if your content or IP is blocked by Gmail, Yahoo!, or other ISPs. Identify “risky” content and clean HTML errors to ensure delivery. Run automatic tests and get notified about issues when they occur. Get notified if deliverability issues occur by email, Slack, or Telegram. You can book a 1-hour consulting call with one of our expert consultants and get all of your email marketing & deliverability questions answered. Large enterprises can opt for our comprehensive Email Deliverability Audits.

Partner with the email service trusted by developers and marketers for time-savings, scalability, and delivery expertise. The Twilio SendGrid Email API and proprietary Mail Transfer Agent (MTA), intuitive console, powerful features, and email experts make it easy to ensure all your email gets delivered in seconds and without interruption. Whether you’re sending 100 emails or 100 billion, SendGrid is built to scale, while maximizing inbox placement and protecting your reputation as a trusted sender. Monitor engagement data and optimize deliverability with our Deliverability Insights dashboard. Integrate with our RESTful APIs and SMTP in minutes, with sample code libraries available in 7 languages, interactive docs, templates, and more.

Make sure your emails successfully reach your audience by scaling up to over 10 million messages each month through our robust SMTP infrastructure and comprehensive API. You'll receive personalized weekly insights delivered straight to your inbox, where our email specialist provides you with a detailed report filled with useful tips and strategies for improvement. Enjoy round-the-clock support and monitoring, allowing you to contact us anytime via WhatsApp, phone, or email, ensuring assistance is always available when you need it. Avoid getting overwhelmed by unnecessary information; instead, obtain a concise overview of your email deliverability and identify any specific hurdles. Instantly assess your performance in email delivery for any chosen timeframe—be it the last week, the past month, or a custom period. Enhance your delivery rates with in-depth analysis regarding bounces, successful deliveries, and more, making it easy to identify issues promptly. With weekly personalized, actionable recommendations, you can further enhance your email delivery success, while our dedicated experts continuously monitor your email performance to ensure everything runs smoothly at all times. This commitment to support ensures that you are never alone in optimizing your email strategy.

Reliable SMTP relay services and email delivery services. You can send and track large volumes of emails with ease using powerful email delivery services. In minutes, integrate and you can start sending. All your email delivery, transactional and email relay needs are covered under one roof. SMTP can deliver whether you need a reliable backend solution or scalable infrastructure to handle large volumes of emails. Reputation Defender, SMTP's proprietary technology, uses big data to proactively monitor and protect your email list health. It also suppresses bad emails from soft and hard bounces in order to protect your IP reputation and domain. This will ensure that your delivery rates and inbox placement gradually improve over time.

Track delivery, clicks and bounce rates in real-time. Welcome to the lightning-fast delivery of transactional emails. Create beautiful, responsive emails with our drag-and drop email template builder in minutes. Supercharge your emailing abilities with our fully-warm-up dedicated IP address. Receive real-time notifications regarding email events. Use our webhooks for tracking email delivery, bounces and more. Get detailed, real-time reports on emails sent and opened. Using valuable insights, you can enhance your user's experience. Manage bounced emails with ease while ensuring that recipients who received the emails are not contacted again. Use our email API or the traditional SMTP to send emails via HTTP requests. Our email API integrates seamlessly with your website or app to ensure that your emails are delivered directly to your inbox.

TurboSMTP understands that email is not just a means of communication but the backbone of your customer engagement strategy. TurboSMTP Email API is trusted by developers and marketers alike for its time-saving features, scalability, and delivery expertise. Our service offers a flexible SMTP relay solution along with advanced features tailored to meet the needs of businesses of all sizes. With our intuitive dashboard, powerful features, and dedicated support, ensuring the delivery of your emails is seamless and uninterrupted. TurboSMTP's infrastructure is built to scale, whether you're sending a few hundred emails or millions. Integration with our service is effortless, with sample code libraries available in multiple languages, interactive documentation, and customizable templates. TurboSMTP offers webhook integrations and automates actions based on email events, streamlining your workflow. Plus, our email validation tools ensure list accuracy, reducing bounce rates and improving deliverability. TurboSMTP not only prioritizes the reliability and efficiency of email delivery but also understands the importance of providing exceptional support to our valued customers. That's why we offer multilingual 24/7 support.

SendPost replaces manual hacks, messy workarounds and daily frustrations associated with your email API/SMTP provider. If you send a few thousand emails, most email API solutions will work well. You will choose one based on its price, features, or support. If you are a big sender, sending millions of emails each month, the real problem is here. This is when managing multiple domains, IP-Pols, and IP/Domain reputation becomes a major headache. Even a small drop in your email open rate, or delivery, can have a significant impact on your revenue. You need a solution that helps you identify the problem and provides quick solutions. You don't want spend hours looking through logs to determine if your domain, IP or sending reputation are low.

Choose the best email SMTP or API for the most robust delivery experience. Netcore Email API, formerly known as Pepipost, provides a powerful transactional inboxing and AI-powered email delivery infrastructure that is reliable, scalable and secure, and at the most affordable price plans. We help brands engage with their customers with the right content at the right time via emails.

MailerSend is a hassle-free transactional messaging service designed so that developers can integrate transactional email and SMS quickly and effortlessly into their stack. Intuitively designed so anyone can contribute, with a powerful sending infrastructure and flexible payment plans that empower you to scale your sendings quickly. With over a decade of deliverability expertise, and inbuilt email verification, you can rest easy knowing your sender reputation will remain intact. Plus, premium features including sender identities, dedicated IPs and priority support make for an advanced, comprehensive solution. Get started for FREE with 500 emails per month, then upgrade for as little as $7/month for up to 5,000 emails!

Elevate your Email Marketing strategy without breaking the bank. By utilizing a dedicated IP address, you can enhance your sender reputation and reduce the risk of being blacklisted due to the actions of others. This approach demonstrates authenticity, ensuring recipients know that the email is genuinely from your business and domain, while also significantly decreasing the likelihood of your messages being flagged as spam by employing advanced cryptographic signatures like SPF and DKIM. Our SMTP servers guarantee that your emails are dispatched through a secure SSL connection, and they do so at remarkable speed. You can track the performance of each mailing list, including the total number of emails sent, conversions achieved, and links clicked, along with a wealth of other insightful data. Additionally, our SMTP service provides comprehensive sending and delivery error reports that are easily downloadable to your device. Importantly, you can rest assured that your emails will not reach any unsubscribed recipients, even if they are listed elsewhere. This ensures that your emails consistently land in inboxes rather than getting lost in spam folders, ultimately enhancing your marketing effectiveness and engagement rates.

Labnify offers a Mailer with an inbuilt SMTP relay system so that you won't need to provide one, ensuring you can send and monitor bulk emails cost-effectively. Included features are real-time analytics, open and click tracking, bounce and spam monitoring, a template builder, among others. Avoiding blacklisting is crucial, so our advanced blacklist monitoring constantly checks your sender reputation, helping your emails reach inboxes. Additionally, Labnify prioritizes email authentication, employing DKIM and SPF protocols for enhanced delivery rates and security. Handling millions of emails is seamless with Labnify. Import your email list and send without any pesky SMTP credentials, streamlining your email marketing process. Built on a cost-effective Email API, our platform supports vast scalability and excellent deliverability, capable of managing over 100 million emails monthly through our highly efficient system.

SMTP2GO is a reliable outgoing email service that allows you to track and send all emails securely and easily. SMTP2GO has a redundant, multi-data center infrastructure that allows users send emails even during an internet outage. SMTP2GO features include real-time analytics and bounce/spam tracking, weekly summaries spamtrap detection, blacklist monitor, DKIM/SPF and many other features.

SocketLabs, an email delivery engine that is reliable and easy to use, allows companies of all sizes to send transactional and marketing emails quickly and easily. Trusted by major organizations like Virgin and the American Red Cross SocketLabs offers a feature-rich outgoing email server delivery solution, an easy to use dashboard interface, and an even simpler setup. It also includes advanced analytics, outgoing mail servers, and top-notch customer support.

PowerMTA is a robust email message transfer agent (MTA) designed for enterprises needing to send large volumes of critical emails. It can be deployed on your own servers or hosted on various public cloud platforms like Amazon Web Services and Microsoft Azure. With its exceptional reliability and advanced analytics, PowerMTA empowers users with complete oversight of their email campaigns. The software enhances performance, improves deliverability, and boosts team productivity thanks to its easy setup, minimal hardware requirements, and comprehensive analytics tools. Experience PowerMTA in conjunction with Signals, starting at $8,000 annually, to leverage volume pricing. This offering includes SparkPost Signals, which provides an in-depth analysis of your email performance across domains, campaigns, and individual recipients, enabling you to fine-tune your email strategies and proactively address potential issues. PowerMTA ensures unparalleled delivery rates and operates efficiently within a secure SMTP framework, allowing for rapid sending while maintaining full control over your email operations. With this powerful tool, organizations can transform their email marketing efforts and achieve remarkable results.

Dependable and safe email hosting solutions for both small to medium-sized businesses and large enterprises. We manage the secure processing of over 100 million emails each month for our clients. Our services include enhanced gateway security, robust filtering systems, inbound email protection, email service backups, and outbound SMTP, all built on a cutting-edge infrastructure to deliver the high-quality results our clients expect. Our offerings encompass a secure email gateway, backup MX services, email forwarding, outbound SMTP, and various additional features. DuoCircle provides robust protection against phishing attempts through its Link Click Protection, which is integrated into the Advanced Threat Defense Suite. This feature ensures that even if the content of a website changes between clicks, you remain protected from potential threats. With Link Click Protection, your sensitive corporate information is safeguarded, as employees are blocked from accessing sites that could exploit such data. Additionally, you receive immediate alerts when a suspicious link is about to be clicked, ensuring your security remains a top priority. Overall, our comprehensive email security solutions enhance the safety of your communications and provide peace of mind for your organization.

Mailtrap is an email API and SMTP service provider built for developer and product teams. It is designed to send transactional and bulk emails with a strong focus on high deliverability rates and reliable performance. Quick integration is enabled through official SDKs for major programming languages, ready-to-use code snippets, and extensive resources, including broad documentation, blog guides, and video tutorials. The platform is backed by 24/7 support from a team of engineers and deliverability experts. Mailtrap’s robust infrastructure is built to handle high-volume sending, allowing businesses to scale confidently. High inboxing rates are ensured with features like dedicated IPs, auto warm-up, separate sending streams, and multi-tenant accounts.

Zulu eDM allows only DMARC Authenticated email on our low-cost SMTP / API Email Gateway and Delivery Network. We only offer Anti-SPOOF compliant mail delivery. This means that our clients enjoy exceptional email authentication coverage and significantly higher than average email engagement performance. This service is fully integrated with our automated email reputation management software and campaign management software to provide the best all-in-one email delivery platform. Options can be tailored to meet the specific needs of franchises, multi-national organizations, industry associations, governments, and small businesses.

EmailSuccess provides high volume email sending with enterprise-level SMTP Servers. EmailSuccess can be used as a Mail Transfer Agent (MTA) for all sizes of senders: ESPs and Marketing Automation Companies. High Performance EmailSuccess, an MTA, is designed to deliver large volumes of email. It gives the business full control over the Speed, Latency and Deliverability parameters. Deliverability Clients must be able to deliver their messages quickly. You must ensure that your email is not blocked by spam filters and lands in your inbox. Advanced Sending Intelligence Optimized delivery through automatic and real-time tuning of email delivery parameters; platform tuning is made easy.

MailerQ is an efficient on-premise Mail Transfer Agent (MTA) designed to handle the delivery of millions of emails daily. With a strong emphasis on performance, usability, and data insights, it features a user-friendly Management Console, REST API, and essential tools for serious senders aiming to enhance their sender reputation and delivery success. This versatility is why MailerQ is quickly becoming the go-to choice for various senders, including Email Service Providers, e-commerce businesses, financial institutions, and government agencies. The Management Console provides real-time visibility into delivery attempts, results, queues, and error logs, allowing users to analyze performance per MTA, IP address, target audience, and even specific customers, campaigns, or message types. Additionally, the ability to track response patterns enables the classification of bounces, management of feedback loops, and adjustment of MTA behavior in response to server replies. As a result, users can significantly improve their email deliverability and maintain a strong sender reputation, ensuring their communications reach the intended recipients effectively. This comprehensive approach not only streamlines the email delivery process but also empowers senders to make data-driven decisions for ongoing improvements.

Utilizing an SMTP relay service such as Miogmail is an effective way to initiate the process of sending both marketing and transactional emails. You can dispatch messages based on specific triggers or conduct ongoing bulk email campaigns without interruption. The platform allows for the creation of visually appealing and customized email templates through an intuitive drag-and-drop editor, or you can opt for pre-designed responsive templates that fit your needs. Prioritizing security, the service ensures a robust email infrastructure that integrates SSL, DKIM, DMARC, SPF, and TLS for utmost protection. Additionally, you can enhance your email delivery rates with advanced management tools and a dedicated IP address. Whether you’re crafting personalized transactional, promotional, or newsletter emails, the platform provides the necessary resources. Furthermore, you have the option to leverage either transactional or promotional SMTP or SMTP API for the distribution of bulk emails efficiently. This flexibility allows businesses to reach their audiences effectively while maintaining a professional appearance in their communications.

Bird, previously known as MessageBird, represents the future of CRM tailored for Marketing, Sales, and Payments, facilitating more than 5 trillion messages each year across platforms like Email, SMS, and WhatsApp. Top brands efficiently enhance their growth through Bird by engaging in tailored interactions across these channels. Innovative organizations around the globe utilize Bird's robust applications and APIs to create effective communication solutions. Start your journey today and connect with your customers seamlessly across various channels, catering to diverse use cases regardless of location. You can send marketing messages, push notifications, order confirmations, delivery updates, and much more. If operational challenges are hindering your growth, leverage automated conversations and workflows to gather essential information upfront, minimize manual tasks, establish self-service options, and direct chats to the appropriate agents. With our dependable, auto-scaling APIs, you can quickly get started with extensive documentation, comprehensive API references, and user-friendly SDKs at your disposal. Experience the power of streamlined communication and watch your business thrive.

You can effortlessly send emails to anyone without limitations on capacity or traffic, as our mail server operates seamlessly whether you are at home on your desktop or on the go with a laptop, tablet, or smartphone. Forget about the hassles of blacklisting, maintenance, updates, and downtime; our robust SMTP cloud servers ensure that your email campaigns reach audiences worldwide. By opting for a dedicated SMTP cloud server, you can send emails using your own IP address and domain, allowing you to maintain complete control over the reputation of your communications. For those in need of a comprehensive professional solution to manage email lists and create top-notch email content, we provide Mailwizz. The volume of emails sent continues to rise, and no new products have emerged to challenge email's status as the most direct means of engaging recipients. In marketing strategies, email consistently stands out with the highest return on investment compared to other platforms like social media, solidifying its essential role in effective communication. Its enduring effectiveness and reliability make email an indispensable tool for marketers aiming to connect with their audience.

To utilize our service, you will need to make adjustments to your domain name system (DNS) records, but don't worry—if you're uncertain about how to do this, we can assist you at no cost! Upon registration, we offer you an SMTP connection for your mass email client and a complimentary online sending platform. Our responsibility includes monitoring and maintaining the servers to ensure you achieve an impressive 98% deliverability rate! It’s important to keep your recipients list clean and up to date. We offer dependable and adaptable SMTP servers that can handle various circumstances effectively. There are primarily two types of email delivery: mass emails and transactional emails. While we recommend our service for mass email campaigns, transactional emails are also supported! Simply let us know your intended use, and we’ll make the necessary adjustments to optimize your experience. We understand that email deliverability is a priority for you, which is why we regularly conduct our own email marketing campaigns to evaluate performance and ensure continuous improvement. Additionally, we are committed to keeping you informed about the latest trends and best practices in email marketing.

Implementing DKIM signing enhances the likelihood of your emails landing in the inboxes of providers such as Gmail and Office365. With multiple servers based in the USA and Europe, our service ensures enhanced reliability. Say goodbye to the stress of overseeing your own email server and managing its IP reputation. You can effortlessly create SPF and DKIM records for your domains, even without any prior experience. In the event of IP blacklisting, our SMTP relay service can effectively address your reputation issues. We offer round-the-clock technical support through phone, chat, or email, committed to guaranteeing the successful delivery of your emails. This means you will be able to consistently deliver your messages straight to the inbox. Our team meticulously optimizes sending routes while keeping a close eye on our IP reputations to provide you with the highest quality service. We uphold a Zero Spam Policy that enables us to block or limit messages that could jeopardize our reliability or your reputation. Additionally, once your domain ownership is verified through DNS, you can send emails from an unlimited number of "From" addresses or domains, giving you the flexibility needed for your communication needs. This comprehensive approach not only simplifies the email sending process but also enhances your overall email strategy.

EmailLabs is a cloud-based email API and SMTP service designed to send transactional and marketing emails. The unique know-how and partnership between well-know Inbox Service Providers ensure all emails sent from our servers being tailored to the requirements of foreign providers like: Gmail, Yahoo or Hotmail as well as local ISPs such as WP.pl, Onet.pl, Seznam.cz, Web.de, Seznam.cz or Libero.it. We take care of overall deliverability to make sure your messages land in customers’ inboxes, promotions or Offers tab. EmailLabs platform can be easily integrated with any email system or application that allows you to add a third party SMTP server. The whole setup process takes only 5 minutes.

Transactional emails: Reach your inbox when it matters most Send personalized, fast transactional emails via API or SMTP. Enjoy the benefits of our global experience sending billions upon billions of emails. Personalized transactional emails are sent to inboxes and not to spam folders. You can customize your analytics with pre-built dashboards and an export API. For assistance, consult our award-winning Support team or read the documentation guides. Use custom tagging and whitelabeling to create conditional content. Globally distributed infrastructure: Automatic SPAM loop registration and prewarmed dedicated IPs. Analytics can be accessed in many ways, including custom tags, A/B testing capabilities and comparative reports. White-labeled click tracking, custom reverse DNS and rules engine are available. Custom return path is also available. This is the average delivery time for top 3 ISPs. It was sent from our MTAs and to the recipient's mail server.

Warmup Inbox automatically improves your email sending reputation by connecting you to other inboxes. Warming up an inbox is the process of creating an email address for general outreach or email use. This involves taking a number of steps to ensure that your email address doesn't become blacklisted, deactivated or marked as spam by other recipients. This is usually done for newly created email addresses, but it can also be beneficial for older email addresses that have had issues with email delivery. For example, a large portion of their outgoing mail ends up in a spam folder. Warming up an email inbox is basically reimagining the way a normal person would use an email address.

Our service ensures your emails reach their destination in mere seconds, eliminating any waiting time for your customers who rely on urgent communications like password resets and order confirmations. We take on the heavy lifting of ensuring your emails land directly in your recipients' inboxes, allowing you to concentrate on enhancing customer satisfaction and expanding your business. Immediate delivery of transactional emails, such as password resets, confirmation links, and order receipts, is a necessity, and we prioritize them above all else. To maintain this high priority, we have established a dedicated sending infrastructure. With a transactional sending account, you can rest assured that your critical emails remain unaffected, even amidst large email marketing campaigns. Additionally, maintaining a strong sender reputation is vital for successful email delivery and should always be a priority for you. We partner with you throughout the process to boost and sustain your sender reputation score, ensuring it remains consistently high. By focusing on these aspects, we help you build trust with your audience, ultimately contributing to your long-term success.

If you're struggling with WordPress emails not being delivered, you're certainly not the only one facing this challenge. The increasing prevalence of stringent spam filters makes it difficult for emails to reach their intended recipients unless they're set up properly. By transitioning from the standard WordPress email configuration to WP Mail SMTP, you can effectively eliminate your email delivery problems once and for all. Are you potentially losing out on valuable leads and sales due to your WordPress site's messages landing in spam folders? Such losses can significantly impact your revenue. When your emails are authenticated through SMTP, they are more likely to be viewed as legitimate, allowing them to bypass those strict spam filters. WP Mail SMTP is compatible with leading secure SMTP providers, ensuring that regardless of your email volume needs, you can partner with the ideal provider that fits your business requirements and financial plan. This way, you can ensure consistent communication with your audience and maximize your conversion opportunities.

Utilize our powerful email delivery platform to create, send, and monitor bulk emails, a top choice for over 6,000 clients across ten countries. Our service ensures that your campaigns achieve impressive delivery speeds, allowing you to design beautiful email campaigns effortlessly using a simple drag-and-drop interface. Key features include the ability to import lists via CSV, access real-time statistics, export data, manage suppression lists, and utilize autoresponders. With our robust delivery routing and reputation monitoring, your bulk emails consistently land in inboxes. Supported by an experienced team and strong infrastructure, we offer a dependable email marketing solution with competitive pricing tailored for both regular and high-volume senders. Our platform intelligently balances delivery routes within an extensive network to enhance the success of bulk email deliveries. You may also receive a dedicated IP address, which aids in establishing a solid sender reputation and boosts inbox delivery rates. Additionally, our proactive in-house SMTP monitoring system effectively oversees your reputation across various Real-time Black Lists (RBL), ensuring optimal performance for your email campaigns. By choosing our service, you can expect not only reliability but also the peace of mind that comes with knowing your emails are in good hands.

Inboxable provides advanced deliverability monitoring tools that enable you to effectively assess the performance of your email campaigns and craft proactive strategies for better deliverability. With our intuitive email builder, you can design stunning messages effortlessly, without any coding skills required. Monitor the placement of each campaign within inboxes almost in real-time, allowing for immediate identification of any deliverability challenges or the ability to halt a mailing if a significant block arises. Internet Service Providers utilize blacklists to decide which emails to prevent from reaching users, safeguarding them from unwanted or harmful messages. Inboxable empowers you to monitor the performance of your IP addresses and sending domains across all major blacklists, with scans occurring hourly or daily based on the blacklist's reach and potential consequences. Additionally, you can test your email designs to ensure they display correctly across more than 60 different email clients, including web, desktop, and mobile platforms, enhancing your overall email marketing effectiveness. This comprehensive approach ensures that your emails not only reach their intended audience but also provide a polished presentation across various devices.

Allegrow elevates your email outreach efforts by harnessing our advanced technology to enhance your sender reputation and optimize inbox placement. We ensure your messages land in the priority inbox rather than the spam folder. With an improved sender reputation, more potential clients in your outreach sequences will be inclined to open and engage with your emails. This leads to more efficient lead generation and boosts overall response rates for your campaigns. By leveraging insights from our extensive Allegrow network, which monitors thousands of email spam folders, you can adhere to best practices for email outreach consistently. Our real-time data across all major Internet Service Providers significantly enhances lead conversion rates, ensuring your emails don’t go unnoticed. The frequency with which your emails appear in your prospects' primary inboxes, as opposed to being relegated to spam, junk, or unfocused folders, is now a transparent process thanks to the automated tests our technology runs daily. Consequently, you can refine your strategies based on reliable metrics and enjoy a higher level of engagement with your audience.

Are you sure that your email is reaching its destination? Email is critical for business communication. You need to be able to verify that your email has been delivered to customers. You also need to know who sent your email. MxToolbox is your expert in email delivery. MxToolbox Delivery Center is our newest product. It gives you the information you need to manage your email setup and troubleshoot emerging issues to improve your email delivery. It can be difficult to understand DKIM, SPF and DMARC. MxToolbox Delivery Center provides a comprehensive service to understand email sent "From" your domain. MxToolbox Delivery Center offers a comprehensive analysis of the blacklist reputation of all your email senders. Your email reputation will be closely monitored, regardless of who is sending you email. This will protect your business and your email delivery from being blacklisted.

Recognizing the crucial impact of marketing on business success, we have developed our Instant Bulk SMTP service, which enables you to launch your email campaigns in under 30 minutes. You can efficiently manage multiple contact lists with options to add, remove, delete, and import or export your data seamlessly. Our platform provides detailed email analytics, allowing you to monitor bounces, opens, and click-through rates effectively. Integrating with your applications is straightforward, and upgrading to a higher plan is hassle-free. Instant Bulk SMTP serves as an outgoing email service, empowering you to send emails from your own address, regardless of whether you have your own software. Unlike conventional email marketing solutions, our high-volume SMTP hosting allows you to send emails directly from your application server, email client, or even a mix of different sources, giving you unparalleled flexibility. This innovative approach ensures that your marketing efforts are both efficient and effective, helping your business thrive in a competitive landscape.

The Microsoft SMTP Service is a mail server software designed for Microsoft Windows Server operating systems, facilitating the sending and receiving of emails. As a component of Internet Information Services (IIS), it effectively relays emails between different mail servers, making it a favored choice for businesses seeking a dependable and scalable email server solution. Its installation and configuration are user-friendly, allowing compatibility with various email clients. Additionally, Microsoft SMTP Service offers several noteworthy features, such as the capability to relay emails across multiple domains, ensuring efficient communication. It supports numerous email clients including Microsoft Outlook, Mozilla Thunderbird, and Apple Mail, enhancing its versatility. Furthermore, security is a priority, as the service incorporates essential features like authentication and encryption, safeguarding email transmissions. Thus, organizations can trust Microsoft SMTP Service not only for its functionality but also for its robust security measures.

-- The email engine you can build on -- We're everything that happens under the hood of your email communications. Reliable Email API with endless capabilities & features ready for integration. Flowmailer's Email Engine provides all the tools you need to build a professional email strategy. From marketing to customer support, from account management to warehousing, every email sent is valuable. Flowmailer is built for continuous high-performance, no matter the emails you're sending. Take away the difficulties of email delivery and focus on creating meaningful email communications with your customers. Email Delivery | SMTP & API | Infrastructure | Transactional Email

Sendcrux was founded in 2017 and specializes in email campaigns, with a particular expertise in cold emails. Our performance is what sets us apart, with industry-leading click and open rates. Our success is based on a dedicated, innovative team, a deep understanding audience engagement, and innovative strategies. We consistently outperform our competitors and deliver unparalleled results for clients. We are the first choice for businesses looking for high-impact, effective email marketing solutions. We will elevate your email campaigns and maximize engagement to drive exceptional results. Choose us to have a brighter and more prosperous future in marketing.

Reliable delivery of your application emails. ActiveCampaign Postmark delivers your email on time and every time to customers. Customers expect transactional emails to arrive promptly, not later. We monitor our delivery times and share the data with the public. Our knowledgeable support team is always available to assist you, via 1-on-1 calls, webinars or email. Postmark integrates seamlessly into any stack thanks to its API libraries that support almost every programming language.

KingSMTP (formerly known as Kingmailer, founded in 2017) is a simple and fully featured mail server / SMTP service for use by anyone, not just developers. Start sending, receiving or routing your emails with a few clicks.

Amazon Simple Email Service (SES) offers an economical, adaptable, and scalable solution for sending emails from various applications. It allows quick configuration to cater to multiple email scenarios, such as transactional messages, marketing campaigns, or large-scale communications. The service enhances deliverability and safeguards sender reputation through its flexible IP deployment and email authentication features, while sending analytics provide insight into email performance. With Amazon SES, users can securely send emails on a global scale and handle large volumes effortlessly. Whether utilizing the Amazon SES console, APIs, or SMTP, you can set up email dispatch in just a matter of minutes. Additionally, Amazon SES enables email reception, facilitating effective customer engagement on a large scale. Importantly, you only incur costs based on your actual usage of the service, making it a budget-friendly option for businesses of any size. Furthermore, this service is designed to meet the evolving needs of developers and marketers alike, ensuring they can communicate effectively with their audiences.

Campaign Cleaner is a comprehensive tool that optimizes email marketing campaigns. It has over 20 unique features that are all aimed at improving email deliverability, engagement and ROI. The key features include a CSS Inliner to improve email client compatibility and a Font Color Detector for better readability. A Spam Trigger detection will keep emails from being placed in spam folders. It also includes a Blacklist Link check to avoid blacklisted links, an HTML Sanitizer to ensure clean and safe code and a Non ASCII Character replacement to ensure proper display. The tool is further enhanced by features such as Broken Link Detection and HTML Compression. Campaign Cleaner is a valuable tool for marketers because it offers a variety of features that help create more efficient and effective campaigns.

Failing to configure SPF and DKIM correctly can lead straight to the spam folder. We will ensure these settings are in order and guide you in doing so, giving you peace of mind for safe email sending. Additionally, having a domain that's blacklisted can severely impact your email delivery success. To prevent this, we keep a close watch on nearly 100 different blacklists, ensuring that you are alerted promptly if your domain faces any issues, allowing you to respond quickly. Regularly monitoring your sender reputation across multiple platforms can assist you in determining whether to persist with or reduce certain email efforts. It's crucial that your cold outreach domains point to functional web pages, and we provide immediate notifications if any links are broken, enabling you to rectify the situation without delay. We also ensure that your emails do not end up in the spam folder or remain there. Our cutting-edge technology significantly enhances your deliverability, ensuring your messages are not only received but also read. Furthermore, by optimizing your email practices, you can cultivate a more trustworthy sender profile over time.

We create a comprehensive analysis report that includes the sending IP, domain information, blacklist status, content spam score, and alignment of DNS records to enhance the likelihood of your emails reaching the inbox. After dispatching your email, initiate the diagnostic process, and we will compile a detailed report to help you understand and troubleshoot any issues related to your email campaigns. Utilize your email marketing platform, ESP, API, or your GSuite/Zoho workspace to send an email to the recipient specified by us. The blacklist checks for domains within the email content that have previously been identified as sources of spam, ensuring that these domains are tracked not only in the initial link but also in any final redirected links. To determine whether the sending server's IP address is an open relay used by spammers or associated with an ESP that permits spammers to exploit its resources, we employ RBL and DNSBL. This thorough approach provides valuable insights, allowing you to make informed decisions to improve your email deliverability.

Ongage serves as a comprehensive email marketing solution tailored for sophisticated marketers who aim to execute premium campaigns while deepening their audience insights. Both developers and those without technical expertise can launch high-volume campaigns thanks to its user-friendly dashboard that offers extensive control. Users can obtain valuable insights into customer behaviors, craft data-driven emails, and segment audiences based on specific intents. Additionally, Ongage allows for the creation of personalized experiences that respond to customer actions, featuring automated real-time emails designed to guide audiences toward desired outcomes. Acting as a complete hub for email deliverability, Ongage boasts a suite of features, analytical reports, and expert guidance that dissect deliverability from multiple perspectives. The platform enables seamless synchronization with your CRM, CDP, and data warehouse, enhancing the effectiveness of campaigns in real time. Users can easily connect to any SMTP relay or MTA, or utilize Ongage's integrated SMTP to send their messages. Furthermore, Ongage offers flexibility by allowing users to send emails from multiple SMTPs or just one, ensuring a tailored approach to email communication. This adaptability makes Ongage a powerful ally for marketers aiming to maximize their impact through effective email strategies.