MailFathom CLI alternatives

12 Windows apps in the same category as MailFathom CLI, ranked by what they have in common and by popularity.

• 
  Tuta Mail

  Tutanota is an email client with a strong focus on security and privacy that lets you encrypt emails on all your devices.

  Open source 362.261023.2 50.1K ↓ ★ 8K email, privacy
• 
  Mailspring

  Boost your productivity and send better email with Mailspring, the best mail client for Mac, Linux, and Windows.

  Open source 1.26.2 7.7K ↓ ★ 17.9K email, imap, mail
• 
  Proton Mail Bridge

  Use Proton Mail with your desktop email client

  Open source 3.27.1 26.2K ↓ ★ 1.6K email, imap, mail
• 
  eM Client

  Fast email client with full Gmail, Hotmail and other services synchronisation. Best replacement for MS Outlook or Thunderbird. Free version for Home users.

  Free 11.0.1054 98.1K ↓ email, imap, mail
• 
  MFCMapi

  Provides access to MAPI stores to facilitate investigation of Exchange and Outlook issues and to provide developers with a sample for MAPI development.

  Open source 26.0.26291.01 5.7K ↓ ★ 984 email, mail
• 
  Claws Mail

  The user-friendly, lightweight, and fast email client

  Open source 4.1.1-1 11K ↓ email, imap, mail
• 
  Prospect Mail

  Unofficial desktop client for Microsoft Outlook

  Open source 1.2.1 592 ↓ ★ 544 email, mail
• M
  Mozilla Thunderbird (en-US)

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

  Open source 158.0.1 email, mail
• P
  Postbox

  Postbox is the power email app for busy professionals, like you.

  Proprietary 7.0.56 17.5K ↓ email, mail
• 
  Betterbird

  Betterbird is a fork of Mozilla Thunderbird with additional features and bugfixes.

  Open source 153.5.0 44.3K ↓ email, mail
• B
  blat

  A Windows command line utility that sends eMail using SMTP or post to usenet using NNTP.

  Open source 3.2.24 19.3K ↓ cli, email
• 
  Zimbra Desktop

  Zimbra Desktop is a desktop email client that synchronizes your emails even when offline, so your mailbox is updated when you go online.

  Proprietary 4.50.0 9K ↓ email, mail

Comparison

App	Licence	Version	Updated	GitHub stars	Chocolatey downloads
MailFathom CLI	Open source	0.4.0	September 1, 2026	16	—
Tuta Mail	Open source	362.261023.2	October 23, 2026	8K	50.1K
Mailspring	Open source	1.26.2	October 22, 2026	17.9K	7.7K
Proton Mail Bridge	Open source	3.27.1	October 8, 2026	1.6K	26.2K
eM Client	Free	11.0.1054	October 8, 2026	—	98.1K
MFCMapi	Open source	26.0.26291.01	October 19, 2026	984	5.7K
Claws Mail	Open source	4.1.1-1	December 8, 2022	—	11K
Prospect Mail	Open source	1.2.1	April 1, 2026	544	592
MMozilla Thunderbird (en-US)	Open source	158.0.1	October 21, 2026	—	—
PPostbox	Proprietary	7.0.56	July 19, 2022	—	17.5K
Betterbird	Open source	153.5.0	October 14, 2026	—	44.3K
Bblat	Open source	3.2.24		—	19.3K
Zimbra Desktop	Proprietary	4.50.0	September 24, 2026	—	9K