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A message transfer agent (MTA) is software that transfers email messages between computers using SMTP. Learn about MTA operation, protocols, and terms related to email delivery and access.
An e-mail agent is a program that is part of the e-mail infrastructure, from composition by sender, to transfer across the network, to viewing by recipient. The best-known are message user agents (MUAs, aka, e-mail clients) and message transfer agents (MTAs, programs that transfer e-mail between clients), but finer divisions exist.
A comprehensive table of mail servers for Unix, Windows, and macOS, with features, protocols, storage, license, and webmail support. Compare different mail transfer agents (MTAs), mail delivery agents, and other e-mail software.
AOL Mail offers features like news, weather, security and spam-blocking for free. You can sign up for an AOL account and access your email on the go with an app or on the web.
All such figures are necessarily estimates because data about mail server share is difficult to obtain; there are few reliable primary sources—and no agreed methodologies for its collection. Surveys probing Internet-exposed systems typically attempt to identify systems via their banner, or other identifying features. [ 1 ]
Learn about the techniques and protocols to verify the origin of email messages and combat spoofing, phishing, and fraud. Compare SPF, DKIM, and DMARC, and see how they work with SMTP and DNS.
Learn how to use POP or IMAP to download or send emails from your AOL Mail account on a different email app. Find the server settings and instructions for common email apps like Outlook, Gmail, Samsung and more.
The final MTA is also known as Mail delivery agent (MDA), putting the mail into the mailbox of the recipient. The MDA transforms the reverse path into the known Return-Path header field: Return-Path:<@news.server.example:not-for-mail@other.example> SMTP uses MX records for its forward routing. Explicit source routes as in...