I switched over to Proton from Gmail about 8-10 months ago and it’s been great so far. Folders and filters have been like what I was used to. The only thing I haven’t played around with much is calendar and invites.
I ended up going for the whole proton bundle since it included the vpn, storage, and custom domains (up to 10 addresses I think)
The idea behind the heliosphere and all its related parts are really interesting. Something about a giant space bubble/teardrop flying through the galaxy that blows my mind. Learning about termination shock and the sink basin example really gave off this weird sense of cosmic grandeur that can be somewhat replicated on earth. As above so below kinda thing.