Strong end-to-end encryption

Huge number of people (myself included) would pay a large premium for end-to-end encryption of personal and team notes, instantly searchable offline on Desktop + Mobile.

This is the single most important feature that will bring you millions of users. No one else offers this now. The only two working exception are:

• Apple notes (encryption is very inconvenient and private notes not searchable).
• Standard notes (not working well offline with html).

Neither of these product supports teams.