(I do product at CropUp.)

Correct, great observation. PayPal Masspay charges the payment sender a fee, but it's free for the recipient. So these payouts are free for our merchants.

Hey I'm curious as to what you mean by a purchase notification API?

Would you imagine something like a pub/sub system or something that you would ping?

I mean something like PayPal IPN or another system which notifies my server about a purchase so I can send digital good to buyer e-mail for example.

(I do product at CropUp.)

For digital goods, we'd handle the fulfillment for you. Goal is to make it dead simple and to provide everything you'd need, so you don't have to use any other services or do any coding.

Still, a server to server notification would be a good thing to have, no concrete plans or timing yet though.

Thanks for your feedback.