When enabled in your account, Prebuild Burst Sending allows you to send emails fast. The audience is locked down and the emails are built when the schedule send time is set. Use this feature for flash sales or emergency messaging.
Example On Wednesday, you set the scheduled send time to send a flash sale email on Friday morning
at 9 AM. The system immediately begins building the emails for the audience and stores the emails
until send time. Then, on Friday morning at 9 AM the emails are sent fast because the system
built the email and compiled the audience on Wednesday.