How many dunning letters can be sent each time?

Summary:

Hi,

We're using the "Send Dunning Letters" process every month to remind customers to pay for overdue invoices. We have over 1000 delinquent invoices but we found that system can only send 1000 letters each time. Is there any way to increase this limit? Or what is the recommended way/ best practice to handle if the limit can't be overcome, e.g. will the system send out the remaining letters if we run the process again immediately after the first run? Please advise. Thanks.

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