The “Expired pre-approval” event messaging rule is sent whenever a pre-approved inquiry on Airbnb or VRBO has expired (generally 24 hours after the pre-approval is given).
Inquiries are not supported for Booking.com, therefore, this rule is not relevant to Booking.com.
Use this messaging rule to explain to the guest that their window to book, based on the pre-approved inquiry, has expired, and maybe welcome them to try again.
Note: if you set the timing of this messaging rule to a “Delay”, and you manually reply to the guest before the message is scheduled to be sent, the message will be cancelled.
Messaging rule template
You can find a pre-made template for this messaging rule here.