259+ email tools for developers — transactional APIs, newsletter platforms, and drip campaigns. Alternatives to Mailchimp and SendGrid.
Newsletter design tool
DKIM library, to sign & verify email
The official Dotdigital for Magento2 extension
Newsletter and email marketing with advanced management of subscribers, bounces, and plugins
Email lead and validation APIs
Email test server for development
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
Mail hosting and management platform including a modern and simplified web user interface
CSS inliner for your HTML emails
Another browser-based IMAP client