**Feature summary** (what you would like to be able to do and where):
When admin B takes action to undelete a file (on Commons) which admin A has deleted, admin A should receive an alert, similar to a revert of an edit on Wikipedia. Perhaps a similar case is undeletion of Wikipedia pages, Wikidata items etc. It appears undeletion can now be done unnoticed by admin A.
**Use case(s)** (list the steps that you performed to discover that problem, and describe the actual underlying problem which you want to solve. Do not describe only a solution):
I accidently noted another admin on Commons did undelete a file I had deleted, and would have liked to be notified automatically. In this case somebody else notified me, but imho this should have been done automatically. The mentioned admin B did not comment on my talk page, nor did they initiate a procedural request for undeletion, possibly forgot to do this, or was not aware this would be de procedure.
**Benefits** (why should this be implemented?):
In that case we could have a discussion why the file should be kept or should be deleted. In the current situation it is impossible to check if somebody reverted your decision and why they did so.