I think, Aye - if I understand the problem he doesn't know? I think the message they get when we fill in the "notify author of this action" part doesn't provide a thread or message link, so they don't know what was deleted (I think?)
That's correct. It specifies the thread title only. They will get an alert for EACH deleted message if you check that box with whatever explanation you provide. But like Coyote said, if you're cleaning 30 posts you can't INDIVIDUALIZE the message for all 30 of them. So it's always "off-topic, personal only, or response to illegal post" -- or something general like that. If it's isolated -- you'll get a more specific description of your "sin"..
If members KNOW who deleted it -- because the "alert on deletion" was used, and they wanted to SEE a deletion or two, I would generally "undelete" a couple for them to go see for themselves. Or just copy them into the PM.
If it includes a warning, ONE post is selected for inclusion into the warning, but in general -- there's many more deleted.