Oh wow! I discovered if someone mentions your #Fediverse handle for your #WordPress blog (if the #ActivityPub plugin is enabled), you receive an email alert along with a permalink to the post.
Example: @darnelltv
This is great (I wish #WriteFreely had something like this), but I wish the notifications came from the app (either WordPress or the dreaded #Jetpack app) & not via email, as that can be overwhelming.