Whatever the past is, I believe there's a new market in 2021 for Apple-switchers that will unleash new funds for companies like yours. De-Google movement will pale in comparison to this in terms of economics. Looking into signing up just on principle. Non-E2EE encrypted, closed source, without ability to self host is a dead end, why put a penny more towards it. Open source options may suck today but it's the only path forward. Thank you for what you do - whether your company succeeds or simply inspires 1,000 new companies in its place.
What are your plans for Linux support? Your site only mentions Android and iOS, I see electron mentioned, but again I'm one of these Apple switchers, I have no idea what I'm doing really but I'm willing to pay for solutions.
Take my money!!!