There are two unique ways to send an RPost® Registered E-mail® message. Once enabled, you simply press the "Send Registered" button on the compose page of your e-mail software or simply add an (R) in the beginning of the subject line of the e-mail message before the message subject.
 

Send (R)egistered™	R-mail™
Sending Registered E-mail® messages  at the click of a button to authenticate delivery, content & time.	Sending Registered E-mail® messages by typing "(R)" in the beginning of the subject field to authenticate delivery, content & time.
Animated tutorial (click here)	Animated tutorial (click here)