Simple definition
POP3 usually retrieves messages from a computer and can then delete them from the server.
Technical definition
Post Office Protocol version 3 is simpler thanIMAP and synchronizes little information. It commonly uses port 995 with TLS.
What is it used for ?
Download a box on a single device or store messages locally in some old environments.
Practical example
An old software recovers the new emails each morning and stores them only on the post office.
Common issues
- Missing messages on other devices
- Data loss if the position is not saved
- multiple copies when server storage is enabled
- Local box too large
Related terms
Key takeaway: This entry explains the general operation of the term. Exact settings may vary depending on software, vendors and environments.