There is also the option of running your own mail server, and encrypting mail as it is delivered: https://grepular.com/Automatically_Encrypting_all_Incoming_Em

There is also the option of running your own mail server, and encrypting mail as it is delivered: https://grepular.com/Automatically_Encrypting_all_Incoming_Email https://grepular.com/Automatically_Encrypting_all_Incoming_E...