Is the hey email client by DHH and Jason Fried (Basecamp) still able to unlock features while avoiding using apple's in-app subscription purchase? I just saw a

Is the hey email client by DHH and Jason Fried (Basecamp) still able to unlock features while avoiding using apple's in-app subscription purchase? I just saw an update on this from the compliance guidelines and seems to go against the whole ordeal they came out on top of two years ago.