Post Office Protocol Version 4 FAQ.
Why are there no questions in the FAQ?
Because nobody's asked me anything yet.
Why can't I download O3 yet?
The software is completed and tested (in fact, I'm running it now)
but I have not yet finished the documentation or made any installation
or build scripts.
Okay, now you can download it here
My first two questions are nearly the same:
What does POP4 have to offer that IMAP
doesn't? Aren't you re-inventing the wheel?
How is it (pricipally) different from imap?
POP 3 is a nice simple protocol. It serves the purpose of enabling people
to get their mail.
IMAP Is none of the above.
POP 4 adds some functionality to POP 3 while trying to maintain the
simple ease of use design of POP 3.
IMAP isn't that either.
I realize that this would have been more appropriately
done in 1998 when the idea was first presented to me, but the situation
turned out that it was completed now. Maybe I could have made more of a
difference, but at least from now on, I can try and spare future mail developers
the grief of trying to implement an IMAP client or server by offering
Although some of the features are the same, I'm not trying to create a
Bradley armored vehicle, I'm trying to build a bicycle.