MailerSend
Team-friendly email API for modern apps
MailerSend is a transactional messaging platform covering email, SMS and WhatsApp, aimed at sending application-generated messages such as confirmations, alerts, password resets and OTPs. It provides an API and SMTP relay so teams can integrate sending without building their own delivery infrastructure.
Core capabilities include a REST API with SDKs for several languages, an SMTP relay, dynamic email templates with a drag & drop builder and HTML editor, webhooks, real-time email activity and analytics, suppression management, email verification, inbound routing, and DMARC and blocklist monitoring. A hosted MCP server connects AI agents such as Claude, ChatGPT, Cursor and VSCode for sending messages, pulling reports and creating webhooks. Integrations include Zapier, Supabase, Firebase, Laravel, Slack, WordPress, WooCommerce and others.
MailerSend is built for developers, startups, SaaS teams and agencies managing multiple client domains. It offers a free plan with a monthly email allowance, a 14-day trial of Professional features, and paid editions — Hobby, Starter and Professional — with limits on seats, domains, templates, activity retention and daily API requests; SMS and WhatsApp are available as add-ons on higher tiers, with extra usage billed per volume.
12 alternatives to MailerSend
Ranked by how well each tool replaces MailerSend: shared features, audience, price and popularity.
An email and marketing automation platform for growing businesses.
Covers 2 of 15 key features.
Free plan70 out of 100 matchFree- 69 out of 100 match$15/mo
SMTP relay and email API for transactional and marketing email
Covers 3 of 15 key features.
Free plan67 out of 100 match$10/moTransactional email API and SMTP service for sending, receiving, tracking, validating, and
Covers 4 of 15 key features.
Free plan67 out of 100 match$15/moAn email platform for developers to send transactional mail.
Covers 4 of 15 key features.
Free plan66 out of 100 matchContact sales- 65 out of 100 match$25/mo
Email delivery platform for transactional and marketing email.
Covers 3 of 15 key features and starts cheaper.
Free plan65 out of 100 match$5/moThe customer messaging platform for humans and AI agents.
Covers 5 of 15 key features.
Free plan64 out of 100 matchUsage-based- 63 out of 100 matchFree
- 63 out of 100 match$15/mo
Professional SMTP service for transactional and newsletter email delivery
Covers 2 of 15 key features.
Free plan63 out of 100 match$14.95/moEmail API for developers: send and receive email from your app or agent
Covers 2 of 15 key features.
Free plan62 out of 100 match$15/mo