We’ve collected the best three ways to send encrypted emails in Outlook:
Gpg4o: this is an Outlook Add-in that implements the OpenPGP standard through GnuPG. It integrates seamlessly with Outlook 2010-2016 and guarantees the privacy of all your mail correspondence using end-to-end encryption. The set-up is easy, and the user experience is also very intuitive with all the latest features for the best security. They offer a free version for no commercial use. Support is only available for pro users.
GpG4win: this solution for Windows computers doesn’t just offer email encryption but a whole suite of tools. For example, you can use it for file encryption directly in the file explorer as well. All tools are free of charge. Help and support are given through their community. GpG4win uses GnuPG public-key cryptography for data encryption and digital signatures.
p≡p: Pretty Easy Privacy is a cross-platform implementation of the Open PGP standard. p≡p offers automatic encryption, which makes it an easy tool to work with for the end-user. The email encryption is available for Microsoft Outlook on Windows as well as Android phones. If you use it as an Android app, it’s free of charge. When you use it as an Outlook Add-in, it will cost you 25 Dollars. Help and support are available over email.