gpg -e -a -r <receiver@email.address> [-r <receiver2@email.address>]
<type message>
<ctrl d>
Now copy the PGP message to your mail client and send that mail.
-r
flag per receiver addressgpg -ear reci@pie.nt
gpg -d
<paste encrypted message>
<ctrl d>
gpg --keyserver keyserver.ubuntu.com --search-keys <user@domain.com>
<number of the search result that should be imported>