PayPal MassPay API: 250 trxns max per call
PayPal MassPay Manual CSV upload: 3,000 trxns
See this email from paypal when we tried to enable it: ------------------------------------------------------ Thank you for contacting PayPal regarding mass payments.
Mr X the mass payment facility is no longer available, the information is kept on the web site, purely for the benefit of customers who have already had this facility activated.
I apologise for any inconvenience that this may cause.
But with regular payments? Yes, most UK banks offer batch payment facilities to business customers in the form of a CSV interface.
It's how a lot of wages are processed. The wage/accounting tool produces a batch payment file, and the bank just processes it.
I originally didn't include "UK" in my post, but then realised that my knowledge was only of UK banks and that like direct debits it may be a country specific thing.