deleted by creator

You can probably use something like

git clean -xdf

To get rid of all the artifacts not tracked by git, in this case it’s virtually the same as deleting the repo and re-cloning it.

NOTE: Make sure everyhing is staged, otherwise that data is gone

If they’re leaving them there, I’d be all for it

I never tried this myself, but you got me curious. Since Proton uses SimpleLogin to handle aliases you should be able to use this from their docs to achieve this (you can login into SimpleLogin via proton if you never did) https://simplelogin.io/docs/getting-started/send-email