SMTP (Simple Mail Transfer Protocol): Simple Mail Transfer Protocol is a set of communication protocols that allows applications to send electronic mail over the internet.

When you view an email message with IMAP, you are not downloading or storing it on your computer rather, you are reading it from the email service. IMAP(Internet Mails Access Protocol): IMAP allows you to access your email from any device and from any location.They are erased from the email service once downloaded into your PC or Mac. POP (Post Office Protocol): POP works by calling your email service and downloading all new messages.The most commonly used protocols include: Microsoft Outlook, Mozilla Thunderbird, macOS Mail, Mailbox, and iOS Mail are all popular email applications.Įmail clients can use several protocols to send and receive emails via email servers. You can use the email client to read, organize, and reply to messages, as well as send new ones. An email client is a desktop application that enables users to receive and send emails directly on their desktops.

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