It is possible to NOT send trigger communications depending on the source of the booking. This is directly related to our Airbnb integration but is applicable to other channels as well. Airbnb collects the guest payments and remits the host payments to property manager within 24 hours of guest arrival. Most property managers require monies to be paid before arrival and have specific triggers that go out to guests alerting guest of those pending payments.
Most property managers will not want unnecessary communications reaching a guest as that will only serve to cause guest confusion. This is true for other channel nuances as well.
Select the channel you wish to exclude from the drop down under "Don't apply triggers to the following channels." It is possible to exclude more than one channel by adding multiple conditions to the trigger.