what is the fastest email protocol?

[mikehende]

Can anyone answer that questions for me please?

 

[JackMDS]

Regular Email (not the browser service type like Gmail ) is generated by an Email client that goes to Email server and then the person that it is intended to use his/her email client to fetch the mail.

The three dominant types are explained here.

http://www.howtogeek.com/99423/email-whats-the-difference-in-pop3-imap-and-exchange/


If you have something else on your mind please be kind enough to explain what it is.