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Question

Post Office Protocol - What is POP vs IMAP vs SMTP?

Answer

While SMTP is used for sending emails, POP3 and IMAP are utilized for retrieving emails from a server. Emails sent using POP3 are downloaded straight to your device, whilst those sent via IMAP are stored on the server. Both POP3 and IMAP assist reduce the amount of space needed on servers and local hard drives, respectively.