Microsoft Office Outlook
Commercial
Microsoft Outlook is a personal information manager from Microsoft.
SeaMonkey
Open Source
SeaMonkey is a free and open-source Internet suite.
Airmail
Commercial
Airmail is a fast mail client for Mac and iPhone.
Mutt
Open Source
Mutt is a text-based email client for Unix-like systems.
Rambox
Open Source
Rambox is a free and Open Source messaging and emailing app that combines common web applications into one.
Spark
Free
Spark is a fast, smart mail manager app.
MailMate
Commercial
MailMate is an IMAP email client for macOS featuring extensive keyboard control, Markdown integrated email composition, advanced search conditions.
Apple Mail
Free
Apple Mail is an email client included with the operating systems macOS, iOS and watchOS by Apple Inc.
Postbox
Commercial
Postbox is powerful, intuitive, ultra-customizable, speedy task manager.
Sylpheed
Open Source
Sylpheed is an open-source e-mail client and news client licensed under the GPL.
Zimbra Desktop
Free Personal
Zimbra Desktop is an offline client that lets you manage various email accounts in one desktop tool.
Kontact - KMail
Open Source
KMail is the email component of Kontact, the integrated personal information manager from KDE.
Polymail
Freemium
Polymail is an email application for OS X and iOS known for its clean interface and additional features atop the Gmail platform.
Compare Thunderbird with alternatives
Compare Microsoft Office Outlook and Thunderbird and decide which is most suitable for you.
Compare Apple Mail and Thunderbird and decide which is most suitable for you.
Compare SeaMonkey and Thunderbird and decide which is most suitable for you.
Compare Postbox and Thunderbird and decide which is most suitable for you.
Compare Airmail and Thunderbird and decide which is most suitable for you.
Compare Sylpheed and Thunderbird and decide which is most suitable for you.
Compare Zimbra Desktop and Thunderbird and decide which is most suitable for you.
Compare Kontact - KMail and Thunderbird and decide which is most suitable for you.
Compare Polymail and Thunderbird and decide which is most suitable for you.
Compare MailMate and Thunderbird and decide which is most suitable for you.