Self-hosted email delivery platform that enables applications to send emails via HTTP APIs while handling SMTP delivery, templates, storage, security, and analytics. Fully self-hostable alternative to services like SendGrid or Mailgun.

Self-hosted email API for developers free alternative to SendGrid/Resend

An open-source & self-hostable AWS SES / SendGrid / Mailchimp / Resend / Loops alternative.

Open-source bulk email platform. Send 100K+ personalized emails via Gmail SMTP or AWS SES with tracking, analytics, smart throttling, and zero spam.

Developer-friendly email delivery platform - Open alternative to Resend & SendGrid

Self-hosted email server with the developer experience of a hosted sending API. Postfix + Dovecot + Rspamd in one declarative YAML config. REST API, admin UI, atomic updates with rollback. Source-available under BSL 1.1 (auto-converts to Apache 2.0 after four years).

Add and operate transactional email, SMS, push & web-push from your AI coding agent — no provider lock-in. Skills + MCP for Claude Code, Codex & Cursor.

Official Python SDK for Veil Mail — secure transactional and marketing email with automatic PII protection. A drop-in alternative to Resend, SendGrid, Mailgun, and Postmark.

OSSメール基盤（SendGrid代替）のビジネスモデル・マネタイズ戦略リサーチ

Official php SDK for Veil Mail — secure transactional and marketing email with automatic PII protection. A drop-in alternative to Resend, SendGrid, Mailgun, and Postmark.

Official go SDK for Veil Mail — secure transactional and marketing email with automatic PII protection. A drop-in alternative to Resend, SendGrid, Mailgun, and Postmark.

Official Node.js / TypeScript SDK for Veil Mail — secure transactional and marketing email with automatic PII protection. A drop-in alternative to Resend, SendGrid, Mailgun, and Postmark.

Official ruby SDK for Veil Mail — secure transactional and marketing email with automatic PII protection. A drop-in alternative to Resend, SendGrid, Mailgun, and Postmark.

Official dotnet SDK for Veil Mail — secure transactional and marketing email with automatic PII protection. A drop-in alternative to Resend, SendGrid, Mailgun, and Postmark.

Official rust SDK for Veil Mail — secure transactional and marketing email with automatic PII protection. A drop-in alternative to Resend, SendGrid, Mailgun, and Postmark.

Official java SDK for Veil Mail — secure transactional and marketing email with automatic PII protection. A drop-in alternative to Resend, SendGrid, Mailgun, and Postmark.

Official elixir SDK for Veil Mail — secure transactional and marketing email with automatic PII protection. A drop-in alternative to Resend, SendGrid, Mailgun, and Postmark.

Send high-volume personalized email campaigns with Gmail SMTP or AWS SES, real-time tracking, smart throttling, and self-hosted control