PayPal.me is really easy to integrate. By far the easiest of all, however, you get no callback. This is a showstopper for most and also recurring payments aren’

PayPal.me is really easy to integrate. By far the easiest of all, however, you get no callback. This is a showstopper for most and also recurring payments aren’t possible either. I used paypal.me for both my apps; gif.com.ai and 2fb.me just because it was the most direct way for a chance to be paid over the web.