Cool. I'm fine with using a 3rd party tool though. As a Linux user I'm quite used to having separate tools that do a single job well. 😊 I've been using Firefox Relay so far with positive results. But the free version is quite limited and you can't really customize the aliases at all.

But if Proton Mail already comes with aliasing, that would be a good alternative as I already have an address there. Just not a paying customer yet.

Trying to separate myself from Google a little bit as of late, so I'm looking for alternatives, but nothing too obscure and no self-hosting yet. I'd love a complete package like Google offers, kind of like Proton does.

What will be very hard for me to shake off is Google Drive and Google Documents (Sheets, Docs, etc). Very useful services that do their stuff well. Unfortunately. And very integrated into the only phones I enjoy using -- Pixel phones. 😑