We have listed 2 alternatives for GPGMail which have similar features like
GPGMail
including commercial, freemium, free and open source Mac OS X
alternatives.
Enigmail is a data encryption and decryption extension for Mozilla Thunderbird and the SeaMonkey internet suite that provides OpenPGP public key e-mail encryp…
Mailvelope is a free software for end-to-end encryption of email traffic inside of a web browser (Firefox or Chromium) that integrates itself into existing we…