Mail Talk SMTP and POP

Standard SMTP Conversation

Mailserver says: 220 mailserver.domain.com SMTP ... Greetings
    Sender says: Helo sender.host.name
Mailserver says: 250 Nice to meet you
    Sender says: Mail From:<sender@his.address>
Mailserver says: 250 Sender ok
    Sender says: Rcpt To:<recipient@his.address>
Mailserver says: 250 Recipient ok
    Sender says: Data
Mailserver says: 354 Enter mail, end with "." on a line by itself
    Sender says: Blah, blah, blah...            
    Sender says: <enter>.<enter>
Mailserver says: 250 Message accepted for delivery
    Sender says: Quit

SMTP Commands to Issue Example

HELO python.directsales.com
MAIL FROM:manager@computersupply.com
RCPT TO:james@directsales.com
Data
BLAH BLAH BLAH
.
QUIT

POP3 Commands to Issue Example

user krissyj
pass Xiu$78g
list
retr 1
dele 1
retr 2
dele 2
quit