$ echo 'me@example.com' | base64
bWVAZXhhbXBsZS5jb20=
$ echo 'secret' | base64
c2VjcmV0
$ telnet mail.example.com 25
EHLO me.example.com
250-mail.example.com
250-AUTH LOGIN
250-8BITMIME
250-SIZE
AUTH LOGIN
334 VXNlcm5hbWU6;
bWVAZXhhbXBsZS5jb20=
334 UGFzc3dvcmQ6;
c2VjcmV0
235 Authentication successful
MAIL FROM:<me@example.com>
250 OK
RCPT TO:<you@example.com>
250 OK
DATA
354 Enter message, ending with "." on a line by itself
Hello World
.
250 OK
QUIT
221 mail.example.com Closing transmission channel
