259+ email tools for developers — transactional APIs, newsletter platforms, and drip campaigns. Alternatives to Mailchimp and SendGrid.
Secure SMTP server implementation from the OpenBSD project
DKIM library, to sign & verify email
Email test server for development
Browser-based IMAP client with an application-like user interface
Newsletter design tool
Complete and fully featured mail server for use by websites & web servers
Fast, highly extensible, and event driven SMTP server
Email verification API
Complete mailserver solution leveraging the Nix Ecosystem
Lightweight configurable multithreaded fake SMTP server. Mimic any SMTP behaviour for your test environment
Email and address verification
An SMTP server for test and development environment