I sign and encrypt emails with PGP, which means my emails
have a signature attached verifying that the message was sent
by me and not somebody else.
This signature is often shown by mail clients without
PGP as noname
because the attachment doesn’t have a filename.
Please download my key from here
or from any SKS OpenPGP Keyserver,
and do get in contact if you would like to exchange signatures.
For more information on PGP, I recommend the following pages.