Emails don't arrive

Form, booking and account emails: spam folders, the right address, and limits.

Spam or junk folder, and Promotions in Gmail. Mark Fwdia as "not spam".
The right address: form notifications go to the address in the Form block's settings, or your account's address. Booking notifications go to Bookings > Settings > New bookings go to.
Notifications turned off? Check the Form block's Send an email for each submission setting.
Monthly limits: when a plan's monthly form or booking limit is reached, new ones are refused until next month (see Plans).
Visitors don't get booking emails: they may have mistyped their address. With the email check on, they can choose Wrong address?.

Messages are always in Messages and bookings in Bookings, even if an email went missing.