I'm not sure how to ask this question or if this is even the right place to ask.
I'm asking in general terms, not specifically about this one service, but I've been considering signing up for a new email service. This service is new-new, not just new to me, so it doesn't have the long track record and major corporation behind it like gmail.com/Alphabet or outlook.com/Microsoft.
It occurred to me so much identity online is founded on email; there is a major risk associated with this. If a company folds and loses their domain name it could be trivial for a bad actor to start slurping up IDs and gaining access to anything/everything.
What, if any, systems are in place to mitigate this? I assume 2fa could be an answer, but some banks only have SMS and/or email options to send 2fa tokens. I think many implementations still use email as a backup/recovery method for 2fa as well.