XF 2.1 Email address filtering via StopForumSpam during registration


Hi folks.
We get a lot of user registrations which end up in moderation because of hits on StopForumSpam - they end up in status "email: blacklisted". My understanding is that most of them are email providers which are deemed toxic by the StopForumSpam system.

I think it would be a better experience for both our staff and the users if these addresses were flagged during the registration process, which is exactly what already happens for addresses which are banned via the Admin control panel's "banned emails" tool. (A pop-up says "The email address you entered has been banned by the administrator. Please try another.")

This doesn't seem to be possible at present. I'm contemplating having a go at coding it myself, but before doing so I thought I'd ask here to see if anyone is aware of an add-on which does it (I didn't find one when searching) or indeed if there's any appetite for the core XF functionality to tackle this.