259+ email tools for developers — transactional APIs, newsletter platforms, and drip campaigns. Alternatives to Mailchimp and SendGrid.
A small and easy to configure SMTP and POP3 server for Windows and Linux
Mail hosting and management platform including a modern and simplified web user interface
Another browser-based IMAP client
Email lead and validation APIs
End-to-end email testing tool
Email and SMTP testing with web and API interface
All-in-one mail server with JMAP, IMAP4, and SMTP support and a wide range of modern features
SMTP (email) server with a focus on simplicity, security, and ease of operation
Newsletter and email marketing with advanced management of subscribers, bounces, and plugins
Simple, modern, lightweight & fast web-based email client (fork of RainLoop)
Email (IMAP/POP3), contacts and calendar server
Scalable no-SPOF IMAP/POP3 mail server