Not sure. But Proton, Apple, passmail SimpleLogin (got names mixed up) and some other providers have a way you can create email aliases on the fly that forward to your real address. I think Microsoft does too but it was limited last time I looked at it.
Jokes aside, you can do different stage installs where you don’t have to compile the whole OS. However I feel like the quality has dropped during the past few years and it requires too much tinkering. Back when everything was on spinning rust, the performance difference was very noticeable though.