I’ve seen people (lesbians) talk about it, so I’m leaning toward “yes they can but not always”, but I cannot give an authoritative answer as I am not a lesbian.

How many aliases do you have? I have a couple hundred IIRC

I’ll be honest I am very glad that works for you, but I don’t like touching email servers with a 10 foot pole haha. Too much trouble for me.

The limit for Proton itself is so generous I haven’t needed to. I have an alias for almost every single online account I have, and it’s all built in to the password manager. Very handy.

Proton pass is another