I agree that this is a challenge! If you want to use the hosted version, it's impossible to avoid the need for that trust. I'm working on making self-hosting easier for this reason.

Some other services (like Firefox Relay) will use AWS' Simple Email Service for everything. I opted to go for [MailPace](https://mailpace.com/), an independent, privacy-focused provider instead, which is an improvement but still not ideal. I believe that SimpleLogin lets you self-host your email, which is best from a privacy perspective, but I'm slightly concerned about the UX of having to think about email deliverability. Still experimenting with that!