259+ email tools for developers — transactional APIs, newsletter platforms, and drip campaigns. Alternatives to Mailchimp and SendGrid.
Production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running inside a contain
All-in-one mail server that implements SMTP (both MTA and MX) and IMAP. Replaces Postfix, Dovecot, OpenDKIM, OpenSPF, Op
Mail server suite based on Dovecot, Postfix and other open source software, that provides a modern Web UI for administra
Complete e-mail solution with IMAP4, SMTP, SPF, DKIM, DMARC, MTA-STS, DANE and DNSSEC, reputation-based and content-base
Open source email alias solution to protect your email address. Comes with browser extensions and mobile apps
Create and send newsletters with complete privacy protection. No tracking, no data collection - just simple, clean email delivery with customizable templates and archive sites.
All-in-one (SMTP, IMAP, DKIM, DMARC, MTA-STS, DANE) email server
Fast, scalable, enterprise mail/groupware server providing ESMTP, IMAP, POP3, webmail, mailing list, basic web-based cal
00 is an open-source email API and infrastructure solution that allows developers to own and control their email stack.
💌💨 Email Campaign Delivery built with GoLang inspired by GoHugo
A web application to build [MRML](https://github.com/jdrouet/mrml) templates
SMTP server that sends and receives emails according to a simple configuration file, with an optional web interface that