![]() ![]() (The SMTP connection is built on something called a TCP connection, which stands for Transmission Control Protocol.)įrom there, the SMTP client uses commands to tell the server what to do and transfer data, like the sender’s email address, the recipient’s email address, and the email’s content. When the user hits “send” on an email message, the email client opens an SMTP connection to the server so it can send. Once an SMTP server is established, email clients can connect to and communicate with it. Still, we’ll do our best to condense this protocol down into easy-to-digest chunks. Fair warning: This is where things start to get technical. The best way to explain how SMTP works is to go over the sending process, the individual rules and commands that power it, and the errors you may encounter. You might have also come across the term SMTP port. Those are the communication endpoints that handle the transfer of email data over SMTP as it moves through a network, from one server to another. The same happens with SMTP servers-though instead of taking days, the process takes a few minutes at most. ![]() When you send a letter from city A to city B, it first reaches a local post office in city A here, it gets processed and sent on the post office in city B, which is in charge of delivering it to its final destination. ![]() You can think of servers as your real-life post offices. Specifically, an SMTP server handles the sending, receiving, and relaying of email. Like all servers, an SMTP server is an application that provides a service to other applications within a network, called clients. Most email clients-including Outlook, Apple Mail, Gmail, and Yahoo Mail-rely on SMTP to “push” or send messages from a sender to a recipient. It is also the only dedicated protocol for sending emails. SMTP, which stands for Simple Mail Transfer Protocol, is an email protocol used for sending email messages from one email account to another via the internet.Įmail protocols are sets of rules that let different email clients and accounts easily exchange information, and SMTP is one of the most common ones alongside POP and IMAP. ![]() using a third-party email service: What’s best?
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December 2022
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