Saving a campaign with a large audience no longer fails, and email campaigns no longer wait on Signals warmup before they can go out. Draft the audience, save it, and launch when you are ready.
Large draft audiences are stored reliably, so save no longer chokes on list size
Email campaigns can launch without a Signals warmup gate
Audience counts stay intact when you reopen a draft
Conversion attribution still ties bookings back to the send that earned them