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features
design
support

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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.

Description

Sendmux provides AI agents with dedicated inboxes and a streamlined method for sending emails. Each agent is capable of receiving communications, reviewing conversation threads, managing attachments, replying to messages, and reacting to incoming mail through signed webhooks or Server-Sent Events. Teams can utilize various sending methods including Gmail OAuth, Outlook OAuth, SMTP providers, or managed Amazon SES, allowing for flexibility in their email communications. Additionally, Sendmux offers the ability to distribute sending across different providers using features like weighted routing, sender-domain routing, health checks, failover mechanisms, and customizable quotas based on time intervals such as seconds, minutes, hours, or days. For developers, the platform includes Mailbox, Sending, and Management APIs, comprehensive OpenAPI documentation, SDKs, the sendmux CLI, and MCP tools, along with Sendmux Skills. Moreover, the system ensures tenant isolation, provides mailbox-scoped API keys, supports custom domains, and includes logging and metrics, all while maintaining a usage-based pricing model without imposing fees for each seat or mailbox. This comprehensive approach enhances the overall email management experience for teams and developers alike.

API Access

Has API Yes 

API Access

Has API Yes 

Screenshots View All

Screenshots View All

Integrations

Claude Yes 
Python Yes 
Ruby Yes 
Zapier Yes 
n8n Yes 
AccessOwl Yes 
Codex CLI No 
Elixir Yes 
Gmail No 
Heroku Yes 
Java Yes 
LangChain No 
MaxBulk Mailer Yes 
PHP Yes 
Retool Yes 
Ruby on Rails Yes 
Slack No 
Stripo.email Yes 
Vercel Yes 
Vercel AI SDK No 

Integrations

Claude Yes 
Python Yes 
Ruby Yes 
Zapier Yes 
n8n Yes 
AccessOwl No 
Codex CLI Yes 
Elixir No 
Gmail Yes 
Heroku No 
Java No 
LangChain Yes 
MaxBulk Mailer No 
PHP No 
Retool No 
Ruby on Rails No 
Slack Yes 
Stripo.email No 
Vercel No 
Vercel AI SDK 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)
Free Trial No 
Free Version Yes 

Pricing Details

$0.15 per 1000 emails
Free Trial No 
Free Version Yes 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
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) Yes 
Online Support Yes 

Customer Support

Business Hours Yes 
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 Yes 

Vendor Details

Company Name

Railsware

Founded

2007

Country

United States

Website

mailtrap.io

Vendor Details

Company Name

Sendmux

Founded

2026

Country

Australia

Website

sendmux.ai

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 

Product Features

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