What does "x-usc:" mean?

Question

The gets added to a link in the body of an email, which makes the link useless on arrival. I can't figure out why it happens. Maybe someone knows?

Thanks in advance~

Answer 1

I think it's some form of spam checker. Some e-mail services automatically do it to stop links being opened as people sending spam e-mails can put links on e-mails which when you click on give your computer viruses.

You should be able to go into your e-mail settings/options and disable it if you want to.