[dfwgator]

Get Thunderbird and install add-on named Enigmail (encryption).

What's the price?

[Red Badger]

https://enigmail.net/index.php/en/

What is Enigmail?

Enigmail is a seamlessly integrated security add-on for Mozilla Thunderbird. It allows you to use OpenPGP to encrypt and digitally sign your emails and to decrypt and verify messages you receive.

Enigmail is free software. It can be freely used, modified and distributed under the terms of the Mozilla Public License.

[Bikkuri]

TY RB for answering ;) Glad I’m not the only one who is aware of it :)

Also, Thunderbird is free.