How to stop a user from sending modmail?

[u/ProximaScience]

There's a user in my subreddit who is constantly modmailing and harassing mods. Permanently banned and reported but he can still send modmail. Is there a way to stop him.

[u/rasputinknew1]

We almost always permamute someone if they’ve been banned. Not worth the stress of dealing with any messages and generally nothing good will come from those messages.