Email: POP & IMAP
Explore the workings of POP and IMAP email protocols to understand how email retrieval differs. Learn the connection, authorization, and synchronization processes in POP3, and how IMAP supports multi-device email access and folder synchronization. Gain insight into their respective roles in managing emails on servers and client devices.
We'll cover the following...
We'll cover the following...
POP and IMAP are used to retrieve email from an email server. Either one can be used. Let’s discuss both.
POP
The most commonly used version of the Post Office Protocol (POP) is version 3, or POP3. This is how it works:
POP Phases
Emails are simply downloaded from the server in 4 phases: connect, authorize, transaction, update.
- Connect: The user agent first connects to the POP3 server on TCP using
port 110. - Authorize: The user agent authenticates