Is there anything you shouldn’t try to get in the mail at this point?
I can think of a couple things. While it’s temping to get your billing out under the current postage rates (typically by accelerating a few bill cycles from next week to this week), my test results have shown that it’s not usually worth it.
For every cycle you push into this week (using an example of daily billing cycles and 6 day-a-week payment processing) you reduce the time for the customer’s last payment to get into the billing run.
Believe it or not, a lot of customers wait for the last minute to send in payments and they have a very good sense of the time it takes for a payment to work through the USPS. Customers have a sixth sense about their payment cycles and changes to that timing tends to create problems.