Paubox is described as 'Provides HIPAA compliant email encryption without the hassle of extra steps. Just send emails like normal from any device' and is an app in the security & privacy category. There are more than 10 alternatives to Paubox for a variety of platforms, including Windows, Web-based, Android, iPhone and Mac apps. The best Paubox alternative is GPG4Win, which is both free and Open Source. Other great apps like Paubox are Lock GnuPG, GPGTools, Locki and Virtru.
With Pignus you can encrypt and decrypt your Messages and Documents and send them to your Contacts. Simply create your Profile in Pignus, share it with your Contacts, and then encrypt for them.
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