Guide · June 16, 2026 · 5 min read

RSVP — what it means and how it works at a wedding

RSVP is short for the French “répondez s’il vous plaît” — “please reply”. On an invitation it means a simple thing: the hosts ask guests to let them know whether they’re coming, by a certain date. Behind that polite formula sits very practical maths — the number of chairs, portions, slices of cake and parking spaces. Here’s how to set up an RSVP that actually works.

Why RSVP matters more than it looks

The venue and the caterer work with a final headcount, usually confirmed two to three weeks before the date. Every guest who hasn’t replied by then is either an empty seat you paid for or — worse — a person with no place and no plate. An RSVP isn’t a formality; it’s the only way to make the celebration and the budget line up.

Exactly what to ask the guest

A good RSVP form asks for four things — no fewer, no more:

  • Are they coming — yes or no. Don’t offer a “maybe”: a “maybe” is work for you later.
  • Who’s coming with them — the number and names of companions, so the seating plan doesn’t start with detective work.
  • Contact — an email, so the guest gets a confirmation and you can reach them if something changes.
  • A message (optional) — this is where congratulations, allergies and “we’ll come to the ceremony but not the dinner” situations land.

If you have special questions — menu choice, transport from the centre, attending only part of the day — add them, but every extra field lowers the number of people who finish the form right away.

How to phrase the RSVP on the invitation

Example — with a deadline
Please reply by 1 June — the number of seats (and cake) depends on you.
Example — warmer tone
Tell us if you’re coming — tap YES or NO below. We’re looking forward to every name on the list.

The rules are the same as for the rest of the invitation text: a specific date instead of “as soon as possible”, one clear instruction instead of three channels (“tell Emma or James or my mum”), and a tone that sounds like you.

RSVP by paper, phone or online?

Traditionally a reply card was posted back with the printed invitation; for decades many people handled the RSVP by phone — which meant answers landed with parents, partners, at work and in three different notebooks. An online RSVP combines the courtesy of the first with the practicality of the second: the guest replies on the invitation itself, the moment they’re reading it, and the answer records itself.

On a digital invitation on sealdate it looks like this:

  • the guest picks YES or NO at the bottom of the invitation and names their companions;
  • they immediately get an email confirming their answer (with the day’s schedule);
  • you get a notification — for every reply or as a daily digest;
  • if they change their mind, the same guest simply edits their answer — no duplicate rows;
  • all replies live in one guest book, with an export to Excel for the caterer.

What about guests who don’t reply?

There are always some — and almost never out of bad intent. Three steps, in this order:

  • A week or two before the deadline: a short reminder to everyone who hasn’t responded, cheerful and without reproach.
  • After the deadline: a personal message or call — some people simply need a conversation, especially older guests.
  • In the end it’s your call: anyone who still hasn’t replied counts as “not coming”. It sounds strict, but the alternative is paying for empty seats.

Try how it feels to a guest

The easiest thing is to walk your guest’s path once: open the demo invitation, break the seal and send a test reply at the bottom. If you like how it flows, an invitation with your names and your own RSVP is built for free — you only pay to publish.

An invitation with this text — online tonight.

A digital invitation on sealdate costs €39 one-time, stays active until the wedding + 30 days and includes unlimited guests with RSVPs.