Issue with email sent from Linux server

I have written a shell script to send email to users with message body and attachment. Message body has registered symbol. But when I receive the email, registered trademark symbol has a special character prefixed and appears carlington work® whereas I am expecting to see only carlington work� . How can I get rid of this character ?

Welcome to the forum.

Looks like an incompatibility of the character encodings. What are they on either side?

I am not sure if I understand correctly. Its UTF-8. I am looking for a way to replace this character.

UTF-8 on the receiving side as well? What be the e-mail client?