> And feedback very welcome on our Payment Links product itself!

The most useful addition would be another text box (or full form) in the payment link setup to specify sending some custom text to the payer upon payment (by email or on-page or both).

For example a "Thank You", but also a "here's the private link to the thing you bought, here are the details, here is the password, here is the timeframe for shipping, here's what to do next", etc.