I assume you are using a desktop client such as; Outlook/Microsoft Office mail client?
If you are using a web client, please can you specify so I can further investigate the options/settings.
Also, heads up, I am pretty sure there is a forum rule about language so if I were you I'd quickly edit that keyword out before Admin's see it and give you a warning on your account/ban you. I'm not sure if they can see the post before edits but...
Thanks.