**Current behavior**
If User:Apples has blacklisted User:Bananas on one wiki (English Wikipedia, for example) and Bananas pings them on another wiki (French Wikipedia) the cross-wiki notification from French Wikipedia will display to Apples on English Wikipedia.
(Note that this requires Apples to have cross-wiki notifications enabled, which is on by default.)
**Proposed change**
If User:Apples has blacklisted User:Bananas on one wiki (English Wikipedia, for example) and Bananas pings them on another wiki (French Wikipedia) the cross-wiki notification from French Wikipedia **should not display** to Apples on English Wikipedia.
If Apples visits French Wikipedia — and if Apples has not blacklisted Bananas on French Wikipedia — they should see the notification from Bananas.
**Alternative change**
Make the notification blacklist global and cross-wiki. Worth considering.If Apples has blocked Bananas on English Wikipedia, (Not sure if feasible.)they should not receive web or email notifications if Bananas contacts them on any wiki.