Like most client programs, an email client is only active when a user runs it. The common arrangement is for an … See more

Email clients usually contain user interfaces to display and edit text. Some applications permit the use of a program-external editor.
The email clients will perform formatting according to RFC 5322 for headers and body, and … See more

When a user wishes to create and send an email, the email client will handle the task. The email client is usually set up automatically to connect to the user's mail server, which is typically either an MSA or an MTA, … See more

With no encryption, much like for postcards, email activity is plainly visible by any occasional eavesdropper. Email encryption enables privacy to be safeguarded by encrypting the mail sessions, the body of the messag… See more

In addition to email clients running on a desktop computer, there are those hosted remotely, either as part of a remote UNIX installation accessible by telnet (i.e. a shell account), or hosted on the Web. Both of these appr… See more

POP3 has an option to leave messages on the server. By contrast, both IMAP and webmail keep messages on the server as their method of operating, albeit users can make local copies as they like. Keeping messages … See more

Popular protocols for retrieving mail include POP3 and IMAP4. Sending mail is usually done using the SMTP protocol.
Another important standard supported by most email clients is MIME, which is used to send … See more