Thunderbird Alternatives

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

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

The #1 email warming service to improve your deliverability by generating realistic and meaningful engagement to your emails. Easy-to-use solution to help you land in the main inbox instead of the spam folder.

Visit website paid $19.5 / Monthly (Pro)

eM Client is a fully-featured email client for Windows and macOS with a clean and easy-to-use interface. eM Client also offers features for calendars, tasks, contacts, notes, and chat.

freemium

Secure email with absolutely no compromises. Get your free encrypted email account today.

freemium €5.0 / Monthly (user - 5 GB)

The Power Email App for busy professionals, like you.

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

Open Source

Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues

Open Source

Gmail is available across all your devices Android, iOS, and desktop devices. Sort, collaborate or call a friend without leaving your inbox.

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

Apps/Evolution - GNOME Wiki!

There’s big news attached.

K-9 is an opensource email client making it easy to chew through large volumes of email.

Zoho Mail is a secure, encrypted, and enterprise-ready email solution, a suite of apps tailor-made for your organization's needs.

freemium $1.0 / Monthly (per user)