- 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.
- Paid • Proprietary
- Autocrypt is a set of guidelines for developers to achieve convenient end-to-end-encryption of e-mails. It specifies how e-mail programs negotiate encryption capabilities using regular e-mails.
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- Free • Open Source