Getting Started
Introduction to MailSend
Welcome to MailSend. Learn how to setup your sending infrastructure, integrate the REST API, and start sending high-deliverability emails from day one.
Docs Summary
- What this page explains: MailSend's bulk and transactional email platform capabilities, features, and setup.
- Who should use it: Developers, startups, and marketers starting out with email campaigns or APIs.
- Related MailSend feature: REST API, REST API, campaign builders
- Common use cases: Newsletters, transactional messages, OTPs
- Related docs: Domain Setup, Email API, Campaigns
MailSend is a next-generation transactional and marketing email platform built for speed, reliability, and ultimate deliverability. Designed specifically for modern web apps and AI agents, it provides sub-second API delivery, bulletproof reputation guardrails, and automated domain warming.
Looking to migrate from Resend? Our REST API is fully compatible. You only need to switch your base URL to api.mailsend.dev and update your authorization token.
Key Features
MailSend covers all aspects of your transactional and commercial email lifecycle:
| Feature | Description | Deliverability Impact |
|---|---|---|
| Domain Warmup | Gradual ramp-up schedule for new sending domain keys. | Prevents immediate ISP spam throttling. |
| Complaints Filter | Automatic suppression of spam reports and hard bounces. | Protects your sender IP reputation score. |
| Edge Analytics | Open/Click tracking powered by Cloudflare Workers. | Sub-second load times for tracking pixels. |
| AI Email Composer | Semantic template generation for customer flows. | Faster content iteration with zero dev time. |