The computer world is full of confusing acronyms, and email is one source of many.
It’s useful to understand a few common acronyms, at least at a high level, to make using and configuring email programs a little less confusing.
POP3 and IMAP are half of the email puzzle; SMTP is the other. POP3 and IMAP are protocols (or “languages”) used to get your email, while SMTP is the protocol used to send it.
But why POP? Or POP3? And what are you supposed to enter if you’re asked to configure your email account in your email client?