I prefer skiff.com for email and drive rather proton the days.

That is frustrating. Does that mean those emails don’t show up even when you loud in to the webmail?

Regardless, i could not get on with SN. Have found Joplin and Notesnook both to be superior.

Couldnt tell you, but probably. Check their docs, which are pretty comprehensive.

Check out infomaniak. You get an unlimited (inbox storage) email account when you buy or transfer a domain with them.

Has imap, pop3, native apps for iphone and android plus a (imo) really nice webmail client.

The company is very pro privacy too if the important to you.

I’m on my second year as a customer. Can recommend.