Message when hold times expire

In your WAITLIST tab, there are 3 messages that go out:

1) The message when a shopper comments for something that just sold out

2) The message when a waitlisted shopper's item is now available to purchase (ie the "back-in-stock" message)

3) The message when the hold time expires from the back-in-stock invoice

You can customize all 3 messages. For example, the 3rd message tells shoppers who got invoiced after being on the waitlist that their hold time expired: 

Note that this is only for carts that expire after a waitlisted shopper gets invoiced. Regular invoices that expire from the cart expiration time do NOT get this message