259+ email tools for developers — transactional APIs, newsletter platforms, and drip campaigns. Alternatives to Mailchimp and SendGrid.
Professional Laravel-based email marketing solution with advanced contact management
Email (IMAP/POP3), contacts and calendar server
CSS inliner for your HTML emails
Secure SMTP server implementation from the OpenBSD project
Email verification API
Complete and fully featured mail server for use by websites & web servers
A small and easy to configure SMTP and POP3 server for Windows and Linux
GPG-enabled mailing list manager with resending-capabilities
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
Scalable no-SPOF IMAP/POP3 mail server