I have a really hard time getting excited by this. I'm a Hey customer, and it's one of my biggest regrets. DHH promises a lot, then gets sidetracked with killing DEI or spending years migrating off AWS (for all the supposed savings, I certainly haven't seen any) or bending over backwards to have a framework to avoid front end frameworks or whatever the hot new flavor of the month is. Meanwhile, my Android app email client performs terribly when I'm on LTE (!) and I'm strong armed into using a calendar app that I don't want or need, while obvious spam and phishing emails routinely doesn't get caught and the search feature is less than useless. If changing email addresses was less tedious, I'd have done it already. I'll never trust DHH with another of his company's products, let alone trust him with my computer's operating system.

I quit hey three years ago for the reason you listed and my hey.com email address forwards to my new address indefinitely. Don’t know if they changed that, but migrating away was pretty easy that way