Help me understand telneting to pop servers

[djwk]

Ok, I'm building some software that telnets to a pop3 email server. I've never telneted to an email server before but I just have one question. It may sound stupid it really will help me with my software development.

Ok so when I'm connected and logged in, I send the command "LIST" and something like the following is returned....

1 2039
2 58301
3 93834
4 8293
5 1820
6 29202

I understand 1, 2, 3, 4... etc. but what are the numbers all about on the right? Is it the size of the email in bytes or what?

Anyone know?

 

[Really Useful Matt]

May I ask - What on earth are you doing telneting to a POP3 server?

 

[djwk]

I'm developing a piece of software to automatically print orders for the company I work for.