Gaggle Mail Alternatives

Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!

Web-based IMAP email client

Mailman is free software for managing electronic mail discussion and e-newsletter lists.

Mailbird is the best email client for Windows 7, 8 and 10

Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.

The Power Email App for busy professionals, like you.

Mailspring is a mail client for Mac, Windows and Linux.

Google Groups allows you to create and participate in online forums and email-based groups with a rich experience for community conversations.

eM Client is a Windows-based email client for sending and receiving emails, and managing calendars, contacts and tasks.

Airmail is a lightweight and lightning fast mail client for Mac.

SmarterMail is a next generation email management server that is offering several business collaboration and communication features as well.

A fully fledged, free email server solution, an open source project (GPL v2).