When handling helpdesk tickets we sometimes get this warning message
"Be careful with this message
We couldn’t verify that this message came from XXX. Avoid replying to this email address unless you can confirm that it’s legitimate."
Currently there is no way to handle this other than mark as spam, but sometimes or even often, it is a trusted email address.
It would be nice if there was a way to “mark as trusted” in a similar way that you can “mark as spam”.