Use PGP / GPG
I use GPG (GNU Privacy Guard) to receive and submit encrypted emails. GPG is an implementation of the OpenPGP standard. If you feel the need to send me an encrypted email, then you can find my public key below. It is important to realize that I need your public key too in order to be able to reply with an encrypted message.
The email address used for receiving and sending encrypted emails is shown in the image below. Download my public key Information about Gnu Privacy Guard