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What is Simple Mail Transfer Protocol (SMTP)?

SMTP is part of the application layer of the TCP/IP protocol. Using a process called “store and forward,” SMTP moves your email on and across networks. It works closely with something called the Mail Transfer Agent (MTA) to send your communication to the right computer and email inbox.

What is SMTP (Simple Mail Transfer Protocol)? - Definition ...

TechTarget Contributor. SMTP (Simple Mail Transfer Protocol) is a TCP/IP protocol used in sending and receiving e-mail. However, since it is limited in its ability to queue messages at the receiving end, it is usually used with one of two other protocols, POP3 (Post Office Protocol) or IMAP (Internet Message Access Protocol), that let the user save messages in a server mailbox and download them periodically from the server.

Simple Mail Transfer Protocol (SMTP): Definition & How it ...

SMTP is an asymmetrical protocol, meaning that there are many clients interacting with one server, using a basic model popular in the 1980s which is now mostly defunct outside of email protocols. SMTP runs on TCP/IP and listens on port 25.

SMTP (Simple Mail Transfer Protocol) Definition

SMTP. Stands for "Simple Mail Transfer Protocol." This is the protocol used for sending e-mail over the Internet. Your e-mail client (such as Outlook, Eudora, or Mac OS X Mail) uses SMTP to send a message to the mail server, and the mail server uses SMTP to relay that message to the correct receiving mail server. Basically, SMTP is a set of commands that authenticate and direct the transfer of electronic mail.

What is Simple Mail Transfer Protocol (SMTP)? - Definition ...

Simple Mail Transfer Protocol (SMTP) is the standard protocol for email services on a TCP/IP network. SMTP provides the ability to send and receive email messages. SMTP is an application-layer protocol that enables the transmission and delivery of email over the Internet. SMTP is created and maintained by the Internet Engineering Task Force (IETF).

Simple Mail Transfer Protocol - Wikipedia

The Simple Mail Transfer Protocol ( SMTP) is an internet standard communication protocol for electronic mail transmission. Mail servers and other message transfer agents use SMTP to send and receive mail messages. User-level email clients typically use SMTP only for sending messages to a mail server for relaying, and typically submit outgoing ...

Simple Mail Transfer Protocol (SMTP) - GeeksforGeeks

Most internet systems use SMTP as a method to transfer mail from one user to another. SMTP is a push protocol and is used to send the mail whereas POP (post office protocol) or IMAP (internet message access protocol) are used to retrieve those mails at the receiver’s side. SMTP is an application layer protocol.

SMTP & ESMTP Protocol: Explanation, Port, Example & more - IONOS

If you think of e-mail as electronic mail, then SMTP is the mail man. Without the internet’s standard network protocol, sending applications documents, e-cards, and funny cat videos wouldn’t be possible at all. This is because when you send an e-mail, it doesn’t simply travel directly to the recipient, but goes through a complex communication process with numerous instances before it reaches its destination.