259+ email tools for developers — transactional APIs, newsletter platforms, and drip campaigns. Alternatives to Mailchimp and SendGrid.
🐝 terminal mail client
End-to-end email testing tool
Newsletter design tool
DKIM library, to sign & verify email
Newsletter and email marketing with advanced management of subscribers, bounces, and plugins
Email lead and validation APIs
Email and address verification
Email test server for development
An SMTP server for test and development environment
Lightweight configurable multithreaded fake SMTP server. Mimic any SMTP behaviour for your test environment
Mail hosting and management platform including a modern and simplified web user interface
Another browser-based IMAP client