Twenty people have not replied,
and the caterer needs a number.

The card went into the drawer under the fruit bowl on the day it arrived. The reply card needed a stamp, and buying one meant a trip to the post office on a Saturday. The guest cannot say yes until a manager confirms the Friday off, or until a sister confirms she can take the children. Or, most common of all, they think you already know: they told you at a birthday in March, and as far as they are concerned that was the reply.

None of this is rudeness, and treating it as rudeness is what makes chasing unpleasant. A reminder written out of mild irritation reads as mild irritation, however carefully you phrase it, and a guest who feels told off replies more slowly rather than faster. Assume the drawer. It is nearly always the drawer.

That changes what you do next. If the problem is friction rather than willingness, the job is not to persuade anyone. It is to make replying take under a minute, put it in front of someone who is holding their phone, and leave room for the honest answer, because a guest who genuinely does not know yet still needs a way to say so.

The RSVP deadline printed on your invitation is not the real deadline. The real one is the day the caterer needs a final count, because that is the day food is ordered and staff are booked. Ask for that date and write it down. It commonly falls one to two weeks before the event, and a venue serving a plated menu often wants it earlier than one running a buffet.

Then do the sums backwards. Take the final count date, subtract the time you will realistically need to reach the last few people, which is closer to ten days than to two, and set your deadline before that with a little slack. It usually lands as a deadline three to four weeks out, a count one to two weeks out, and roughly ten days of chasing in between. Our RSVP deadline guide covers how to choose that date and word it so it does not read as an ultimatum.

Two other jobs wait on the same number. The seating plan cannot be drawn until you know who is in the room, and place cards cannot be written until the plan exists. The final count is simply the last moment you can change an order without paying for a chair nobody sits in.

The schedule that works is short. One gentle nudge a week before your deadline, addressed to the whole list rather than to the people who have not replied. One message on the deadline day itself, again to everybody. Then, three or four days after the deadline passes, one direct message to each remaining name, sent by whichever of you actually knows that person.

Then stop. A fourth and fifth reminder do not produce replies, they produce awkwardness, and they change the tone of a relationship you will still have afterwards. Once the one-to-one has gone, the guest is either about to answer or has become a decision you take yourself.

Two details make a disproportionate difference. Send in the evening or at the weekend, when someone can act in the thirty seconds after reading; a reminder read at nine on a Monday is forgotten by quarter past. And do not send all three through the same channel. If a group message failed twice, the third attempt has to be something else, whether a direct message or a phone call to the aunt who has never opened a group chat.

All four follow one rule: short, warm, carrying the link, giving a reason and a date, and never implying the reader has done something wrong. Compare two openings. "Just a reminder for those who still have not got round to it" quietly names a group of offenders; "here it is again in case it got lost" does not, and it gets more replies. So, the group nudge, a week before: "Hello all. Replies close on 3 May and here is the link again in case it got buried: [your link]. It takes about a minute, and it asks about food at the same time, so there is nothing else to send us afterwards."

On the deadline day, to everybody: "Today is the last day for replies. If you are coming, let us know here: [your link]. If you cannot make it, that is completely fine, we would just rather know than hold a seat."

The one-to-one, a few days later, from a real person to a real person: "Hi Anna, I am putting the numbers together for the caterer this week and I have not got you down yet. Are you able to come? Either answer is genuinely fine, I just need to know which one: [your link]."

And the last one, when the count is due: "We have to give final numbers on Friday. If I have not heard by then I will put you down as not coming, which is no problem at all, and if things change afterwards just tell me and I will see what I can do." Two things to avoid throughout: never write "second reminder", and never send the same wording twice, because a repeated message reads as automated and gets treated that way. And if someone has already answered out loud, ask anyway: "You said at Dad's birthday that you were coming, could you put it in the form so I get your food choice?"

Split the list down the middle at the start: you chase your family and friends, your partner chases theirs. This sounds too obvious to say, and it is routinely not what happens. One of you ends up messaging forty people they have met twice, which is slow, faintly embarrassing on both sides, and far less effective than the same words from someone the guest actually knows.

For the last twenty names, the single best move is to hand a branch of the list to someone already inside it. A parent, an aunt, a sibling, the friend who organised the university group. Give them five or six names, the link and a date: "could you get these by Sunday?" They will finish in an afternoon what would take you two weeks, because they have the numbers, they know who is having a difficult year, and they can ring at eight in the evening without it being strange.

One rule keeps this from going wrong: whoever chases does not collect the answer. Replies relayed second hand through three people are how a guest count quietly drifts by six, and how an allergy never reaches the kitchen. The answer goes into the same form as everyone else's. Keep a shared note of who is chasing whom, so nobody gets three messages about the same wedding in one evening.

There will be one to five people who never answer at all. Behind the silence there is usually a reason nobody has told you: illness, a separation not yet made public, a phone number that changed, an argument two branches away. Deciding on their behalf is not a punishment. It is forced on you, because the caterer's form has a box and the box needs a number.

Make the call on evidence, not on feeling. Default to not coming for anyone you have heard nothing from. Default to coming only where there is something concrete: they booked a hotel room, they asked about the dress code, they replied to the night before but not the day itself. A vague sense that they would not miss it is not evidence, and it is expensive, because you pay for the plate either way.

Then word it so the door stays open. "I have to give the caterer our final numbers tomorrow and I have not managed to reach you, so I have put you down as not coming. If that is wrong, tell me today. And if anything changes later, do come to the ceremony anyway, there is always room there. It is only the dinner I have to fix now." That distinction is worth making, because it is usually true: the parts of the day charged per head are the parts that close, while a ceremony or an evening reception can often absorb one more person.

Here is what makes it impossible. The answers are in four places at once: a handful in the family group chat, a few told to your mother in a car park, some on reply cards in a drawer, one in an email you have lost. Before you can chase anyone you have to work out who has already answered, and that reconciliation eats an evening and still leaves you unsure.

What makes it easy is one list where guests and replies live together, so the people who have not replied are simply the names with nothing beside them. That is the part Vowly Event is doing here: your guest list comes in from a spreadsheet, xlsx or csv, with a preview, column mapping and duplicate detection by name or email, and replies land against those names as they arrive. Chasing stops being research and becomes a two-minute look at a list. The wedding guest list guide covers building that list in the first place.

The other half is what a reply contains. A bare yes only starts a second conversation about how many are coming, what they eat and who the plus one is. The RSVP asks it all at once: coming or not, party size, companion names, meal choice, dietary notes and allergens, and a message to the hosts. And because the invitation is a live link, opened in a browser from a message or a printed QR code with nothing to install, your reminder is a link straight to the form. It renders in nine languages, so a guest reads it in their own, and the online RSVP page shows what that looks like from both sides.

One more thing, if your day comes in parts. When the ceremony, the dinner and the after-party have different guest lists, ask about each separately rather than extracting three answers from one message. Vowly collects a reply for each part of the programme, and parts can stay invisible to the guests who were not invited to them.

Late acceptances arrive, usually a week after you closed the list and from someone you badly want there. Whether you can take them depends on one thing: has the final count gone in. Before that date it is a keystroke; after it, a phone call and possibly a charge. Say yes if you can. When you cannot, the honest version is still a good message: "We would have loved to, and the numbers went in on Friday. Come to the ceremony and stay for the evening."

Drop-outs in the last week are more common than late acceptances, and more expensive, because by then you are usually paying for the plate regardless. Illness, childcare falling through, a cancelled flight. There is nothing to fight. What you can do is make the change land somewhere: update the list, then redraw the table so the room matches the plan. A table of nine looks like a table of nine; a table of ten with one empty chair looks like an absence.

Keep the number honest right up to the day. Nominate someone who is not you to take calls in the final forty-eight hours and update the list, because on the morning itself you will not be reading messages. If the number has moved by more than one or two, send the caterer a short note the day before. Most will absorb a small change, and the alternative is a room laid for people who are not coming.