Does MassPay can be called without asking for the confirm of the payment?
I mean, I have to send the money to my sellers (money that I received before from their clients), but I would like to send money to my sellers every day.
Is that possible with MassPay payment without calling "by hand" but instead maybe using cronjobs?
Refer to https://developer.paypal.com/docs/classic/api/merchant/MassPay_API_Operation_NVP/ , you can write a script to call Mass payment API . then you can create a cronjob to run the script every day.