SMTP stands for simple mail transfer protocol. POP is an acronym Post Office Protocol. Though it may sound confusing, the difference is not hard to understand. POP is a protocol for storage of email. SMTP is a protocol for sending and receiving. To give a real-world illustration,...What is a SMTP relay and how does it work?
The Simple Mail Transfer Protocol (SMTP) relay is a type of email delivery service that relays messages from a sender's server to a receiver's server. It works in a way similar to a post office service. Think of SMTP servers as post offices. You have your own server or post office to deposit your email campaigns.What is the difference between pop and POP3?
The basic difference between POP3 and IMAP is that using POP3; the user has to download the email before checking its content whereas, the user can partially check the content of mail before downloading it, using IMAP. Let us check out some more differences between POP and IMAP with the help of comparison chart.