Coremail alternatives

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

• 
  Proton Mail Bridge

  Use Proton Mail with your desktop email client

  Open source 3.27.1 26.2K ↓ ★ 1.6K email, imap, mail
• 
  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
• 
  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 366.261105.0 51.6K ↓ ★ 8K email
• 
  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 ↓ client, email, imap
• 
  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
• P
  Postbox

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

  Proprietary 7.0.56 17.5K ↓ client, email, mail
• 
  Claws Mail

  The user-friendly, lightweight, and fast email client

  Open source 4.1.1-1 11K ↓ client, email, imap
• 
  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 159.0 email, mail
• T
  trojita

  IMAP e-mail client with lightweight GUI

  Open source 0.7 10.7K ↓ client, imap, mail
• 
  Prospect Mail

  Unofficial desktop client for Microsoft Outlook

  Open source 1.3.2 592 ↓ ★ 544 email, mail
• 
  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
• 
  Betterbird

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

  Open source 153.6.0 44.3K ↓ email, mail

Comparison

App	Licence	Version	Updated	GitHub stars	Chocolatey downloads
CCoremail	Proprietary	4.2.3.1614	August 25, 2026	—	—
Proton Mail Bridge	Open source	3.27.1	October 8, 2026	1.6K	26.2K
Mailspring	Open source	1.26.2	October 22, 2026	17.9K	7.7K
Tuta Mail	Open source	366.261105.0	November 6, 2026	8K	51.6K
eM Client	Free	11.0.1054	October 8, 2026	—	98.1K
MFCMapi	Open source	26.0.26291.01	October 19, 2026	984	5.7K
PPostbox	Proprietary	7.0.56	July 19, 2022	—	17.5K
Claws Mail	Open source	4.1.1-1	December 8, 2022	—	11K
Mozilla Thunderbird (en-US)	Open source	159.0	October 27, 2026	—	—
Ttrojita	Open source	0.7		—	10.7K
Prospect Mail	Open source	1.3.2	November 7, 2026	544	592
Zimbra Desktop	Proprietary	4.50.0	September 24, 2026	—	9K
Betterbird	Open source	153.6.0	October 27, 2026	—	44.3K