Then stop writing it on paper
Once the words are right, where the invitation lives matters as much as what it says. A forwarded image cannot be corrected when the time changes, and a text thread cannot show who replied. Put your finished wording on a page with a reply button attached, and the invitation becomes two things at once: the note you would have written, plus a guest list filling itself in.
My Joyfullday builds exactly that shape for any party โ your wording on a mobile-first page, confirmations landing against names, and a reminder button for the quiet ones. Write the invitation once, properly, and let the page do the delivering and the counting.