Open source email service with a strong focus on security and privacy
SaltOS, ERP, CRM, Business Management Suite, Josep Sanz Campderrós
IGSuite is a web-ajax-based Integrated Groupware Suite
Thunderbird tray icon add-on
Simple, modern & fast web-based email client
Free and open source webmail software
Business webmail modular application with mobile client
Webmail made easy!
BNM helps you design and send massive emails in HTML format