This is if you got through the list brokers or other senders. EDDM doesn't allow for any type of block period. That said, it still costs sender money. But if

This is if you got through the list brokers or other senders. EDDM doesn't allow for any type of block period. That said, it still costs sender money. But if are in a 50 unit building and you see those big stacks of advertising being plonked into the mailroom, that's what those are.