Forwarding email contents

[Guest]

Is there a way, or a setting, that when you send someone an email and they
try to forward it, they cannot modify the original text? Please advise

 

[Brian Tillman]

Is there a way, or a setting, that when you send someone an email and
they try to forward it, they cannot modify the original text? Please
advise

In general, no. Once the message is in their mailbox, they can do with it
as they please.