The pile you end up reading at midnight
A text invitation is quick to send, which is why everyone does it. What follows is slower. Forty messages arrive, some say yes, some say yes if the weather holds, some ask what time, one asks whether they can bring a friend, and two you cannot place at all. You become the system that remembers, copying answers into a note before bed.
A live link inside that same message ends the copying. Guests tap the link instead of typing an essay, and the reply arrives already sorted: attending, not attending, who is with them, whether they can eat the fish. Your phone stops being the guest list, because the list now lives somewhere it can be read at a glance.