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Average Ratings 0 Ratings
Description
HELO is a desktop application that streamlines the email testing and debugging process for web developers by capturing and analyzing outgoing emails produced by applications in the development phase. Rather than dispatching emails to actual recipients, HELO offers a local SMTP server that intercepts these messages and presents them within the application, enabling developers to review and validate them prior to launching. This method is instrumental in avoiding frequent issues such as broken links, missing images, formatting mistakes, and other errors that can surface in live emails. It delivers comprehensive debug views that showcase the email in various formats, including HTML rendering, plain text, raw source code, and complete message headers, thus providing developers with an in-depth understanding of the email's structure. Additionally, automated validation tools are employed to check links within the email, ensuring they yield valid HTTP responses, which significantly mitigates the chances of sending emails that contain invalid or broken URLs. By integrating these features, HELO not only enhances the development workflow but also promotes confidence in the quality of email communications before they reach end users.
Description
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.
API Access
Has API
No
API Access
Has API
Yes
Integrations
AccessOwl
No
Claude
No
Cursor
No
Devin Desktop
No
Elixir
No
HTML
Yes
Heroku
No
Java
No
Laravel
No
Lovable
No
Integrations
AccessOwl
Yes
Claude
Yes
Cursor
Yes
Devin Desktop
Yes
Elixir
Yes
HTML
No
Heroku
Yes
Java
Yes
Laravel
Yes
Lovable
Yes
Pricing Details
$49 per month
Free Trial
No
Free Version
Yes
Pricing Details
$15/month
Mailtrap offers transparent and flexible plans to cover the needs of your business, separated into Email API/SMTP (includes Email Marketing) and Email Sandbox.
Email API/SMTP - send transactional & promo emails
- Free: 3,5K emails/mo
- Basic: from $15/mo and from 10,000 emails
- Business: from $85/month and from 100,000 emails
- Enterprise: from $750/month and from 1.5 million emails
- Custom: Tailored for high-volume senders with dedicated support.
Email Sandbox - test your emails
- Free: 50 test emails/mo
- Basic: $17/mo (or $14/mo, billed annually)
- Team: $42/mo (or $34/mo, billed annually)
- Business: $123/mo (or $99/mo, billed annually)
- Enterprise: $498/mo (or $399/mo, billed annually)
Email API/SMTP - send transactional & promo emails
- Free: 3,5K emails/mo
- Basic: from $15/mo and from 10,000 emails
- Business: from $85/month and from 100,000 emails
- Enterprise: from $750/month and from 1.5 million emails
- Custom: Tailored for high-volume senders with dedicated support.
Email Sandbox - test your emails
- Free: 50 test emails/mo
- Basic: $17/mo (or $14/mo, billed annually)
- Team: $42/mo (or $34/mo, billed annually)
- Business: $123/mo (or $99/mo, billed annually)
- Enterprise: $498/mo (or $399/mo, billed annually)
Free Trial
No
Free Version
Yes
Deployment
Web-Based
No
On-Premises
No
iPhone App
No
iPad App
No
Android App
No
Windows
No
Mac
Yes
Linux
No
Chromebook
No
Deployment
Web-Based
Yes
On-Premises
No
iPhone App
No
iPad App
No
Android App
No
Windows
No
Mac
No
Linux
No
Chromebook
No
Customer Support
Business Hours
No
Live Rep (24/7)
No
Online Support
Yes
Customer Support
Business Hours
No
Live Rep (24/7)
Yes
Online Support
Yes
Types of Training
Training Docs
Yes
Webinars
No
Live Training (Online)
Yes
In Person
No
Types of Training
Training Docs
Yes
Webinars
No
Live Training (Online)
Yes
In Person
No
Vendor Details
Company Name
Beyond Code
Founded
2017
Country
Germany
Website
usehelo.com
Vendor Details
Company Name
Railsware
Founded
2007
Country
United States
Website
mailtrap.io
Product Features
Email Testing
A/B Testing
No
Accessibility Testing
No
DMARC Analytics
No
Deliverability Rates
No
HTML Validation
No
IP Blacklist Checking
No
Improvement Recommendations
No
Pre-Send Email Testing
No
Preview Across Browsers & Devices
No
Reporting / Analytics
No
Sender Reputation Scoring
No
Spam Testing
No
Product Features
Email Deliverability
DMARC Analytics
Yes
Deliverability Alerts
Yes
Deliverability Reporting
Yes
Email Address Verification
Yes
Email Content Testing
Yes
Email Previewing
Yes
IP Blacklist Monitoring
Yes
Inbox Placement Testing
Yes
Reputation Reporting
Yes
Email Testing
A/B Testing
No
Accessibility Testing
Yes
DMARC Analytics
Yes
Deliverability Rates
Yes
HTML Validation
Yes
IP Blacklist Checking
Yes
Improvement Recommendations
Yes
Pre-Send Email Testing
Yes
Preview Across Browsers & Devices
Yes
Reporting / Analytics
Yes
Sender Reputation Scoring
Yes
Spam Testing
Yes