If the payout accounts are US based, almost any decent ACH processor that does payout (direct deposits) will allow you to do this. Most (progressive) ACH processors provide an API to their payment system. Two provider that I have worked with that provide such a mechanism are ACHq (See www.achq.com) and FirstACH (See www.firstach.com).
What’s the best way to send mass payouts?
Is there an efficient way to automate making hundreds of payments to online retail customers besides PayPal?1 ansWhat is the most efficient way to send mass or bulk payments?1 ansDo you think an ACH can be rejected (incurring reject fees) if we verify the balance ahead of time?1 ansCan ACH transfers be made to or from a prepaid card?1 ans