{ claus.conrad }

The Bat!



The Bat! is a secure desktop email client for Windows, built to protect your correspondence against third-parties.


I have been using The Bat! on and off since 2012 and probably years before that, but that’s how far back I have saved my licenses.


  • Low system requirements, snappy, can handle large mailboxes easily
  • Supports PGP and S/MIME
  • Portable mode (e.g. run from a flash drive)
  • Extensive filtering and automation (rules) options
  • Very customizable
  • Usable HTML view, not affected by some other mail client’s security issues or bad CSS support
  • Integrated RSS reader
  • Purchase supports developers in one of Europe’s poorest countries


  • Only supports Windows
  • Not open-source (could cease to be developed)

Especially for version 9 (I don’t have enough experience with version 10 yet)

  • It was a bit unstable
  • Gmail authentication was bugged


Syncing the address book with Google Contacts