Email - Mail User Agent (MUA) - Mail Client

1 - 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.

3 - Example

3.1 - Gui

3.2 - Command line

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

3.3 - Library

4 - Management

4.1 - Which client has created the mail

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


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

5 - Documentation / Reference

Data Science
Data Analysis
Data Science
Linear Algebra Mathematics

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