oh wait, I misunderstood. you mean that the sender can add the message?
but doesn't this work already with the comment?
Discussion
Something that allows you to give your tip box a title so people know what the tips will be used for. It would have been nice to have it on Alby, to be honest 😅
Lightning invoices already have space to include a note. Are you just looking for a way to implement this feature more effectively?