259+ email tools for developers — transactional APIs, newsletter platforms, and drip campaigns. Alternatives to Mailchimp and SendGrid.
A library to generate nice email templates working on any mail client
Lightweight SMTP client providing an HTTP API
A web application to build [MRML](https://github.com/jdrouet/mrml) templates
an SMTP-library [](https://github.com/lettre/lettre/actions/workflows/test.yml)
Very simple package to send emails with SMTP Keep Alive and two timeouts: Connect and Send
Batteries-included IMAP client with auto-reconnect, OAuth2, IDLE support, and built-in MIME parsing
Unlimited e-mail inboxes with API/UI access for automation and QA
A microservice to send emails using [MRML](https://github.com/jdrouet/mrml) templates
SMTP server protocol state machine
Mailx is a library that makes it easier to send email via SMTP. It is an enhancement of the golang standard library
Receive form submissions by email
Turns any Ubuntu server into a fully functional mail server with one command