Why you need stowaway (pay join) when you have the ability to post your paynym like this
For example https://satsale.trustbtc.org/
Discussion
Because that leaves out wallets that can do payjoins but don't have bip47 support. On the top of my head I can only think of the joinmarket wallet (maybe there are others??)
Besides, if the payer can use your paynym, you don't need any software running 😂
Exactly, but this is a clever addition all in one place even for those who doesn’t use bip47 wallets
Yeah but my point was that btcpay supports payjoins without requiring bip47 support which potentially increases the scope of good practices being adopted by non-samourai/sparrow/stack users: