Copy or visit Website from Email address

Is there any add on out there, which allows me to copy just the domain part of an email address? Like the “example.com” from "any@example.com". Often Senders miss to send their clickable web address in the email, and I have to do some fiddling to get it from their email address. In the context menu on a email address, I have already “copy address” and “copy name and address”. Nice would be a third thing “copy domain”.