Email - Mail User Agent (MUA) - Mail Client

About

A Mail User Agent (MUA) is a software used for reading, writing and sending emails. They are must well known as email client application.

They are called the user agent in the email world.

Example

Gui

Command line

echo -e "Subject:Hello World \n\n This is my first mail \n" | sendmail [email protected]

Library

Management

Which client has created the mail

In the header field of an email, search for the value User-Agent

Example:

User-Agent: Heirloom mailx 12.5 7/5/10

Documentation / Reference


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