In short. Reminders have a ceiling and most organisers hit it long before they think they have. The levers that move attendance are commitment devices: a charge large enough to be felt, a named role or table, and giving people something to do before the event. Making cancellation easy also helps, because it converts a silent no-show into a freed place and a real number.
Every organiser has sent more reminders. Almost none of them found it solved the problem, because the people who do not turn up are not people who forgot.
Free events have the worst rates, and the reason is not cheapness
A ticket price is a commitment device. Paying for something, even a small amount, creates a sense of obligation to use it, and that obligation is what gets somebody out of the house on a wet Tuesday when the day has gone badly.
Remove the price and you remove the device. A free registration costs nothing to make and nothing to abandon, so it gets made casually and abandoned casually. This is not a judgement about people who register for free events. It is what happens when the only thing standing between a person and not going is a mild intention formed three weeks ago.
So the first question is not “how do I remind them better”. It is “what is holding this person to the commitment”.
Reminders: what they are for and where they stop
Send them. A sequence of three, at a week, at two days and on the morning, with the venue, the time and what to expect. They recover the genuinely forgetful.
Then stop expecting more from them. A fourth reminder does not convert a person who has decided not to come, and it slightly annoys the ones who are coming. The useful reminder is informational, not persuasive: where to park, where the door is, what time it ends. Removing friction converts more people than enthusiasm does.
Commitment devices that actually work
A charge that is felt but not deliberated. Enough to notice, not enough to be a decision. For most business audiences that is a small amount: the point is not revenue, it is that a paid ticket unused is a small annoyance and a free one is nothing. How to price a networking event ticket goes into where that sits.
A refundable deposit, or a donation on no-show. Harder administratively and very effective. The threat is small and specific, which is what makes it work.
A named role. Anyone who has been asked to do something comes. Say a few words, welcome newcomers, introduce a speaker, host a table. Four people with a job is four people who will be there.
A named table or a seating plan. An empty seat with a name on it is visible in a way an absence from a crowd is not, and people know that.
Pre-event engagement. Anybody who does something related to the event before it, beyond registering, is more invested than somebody who clicked once. Asking a question in advance, choosing a table topic, saying who they would like to meet. The action is small and the mechanism is ordinary: having invested something, people are more inclined to follow through.
Make it easy to cancel
This sounds like it will make attendance worse and it does the opposite in the ways that matter.
A one-click cancellation in every reminder converts a silent no-show into a freed place you can offer to somebody else, and into a real number you can plan with. Organisers who hide the cancellation link get the same absence, later, with no chance to fill the seat, and a catering order based on a fiction.
It also removes the small social dread that stops some people replying at all.
Measure it properly, then act on the measurement
You cannot improve what you are estimating. Verified check-in, rather than a headcount, gives you a real attendance rate against registrations, and lets you answer the questions that actually change the event: does the 7pm start lose people, do first-timers drop out more than regulars, is one month consistently worse.
That rate is also one of the most useful things in a sponsor report, because quoting registrations and attendance side by side signals that you are counting rather than guessing.
Over-inviting, carefully
If your real attendance rate is stable, inviting above capacity to fill the room is reasonable arithmetic. Two warnings. It is only safe once you have several events of real data, not a hunch. And it fails badly at small events, where a normal fluctuation that is trivial at 300 is a quarter of the room at 40.
Our position, and what we do not know
The Gantry’s mechanism here is pre-event engagement. Rooms open 14 days ahead, delegates read who is going and shortlist the people they want to meet, and somebody who has shortlisted three people has done something more committing than registering.
We think that helps. We do not have measured data showing by how much, because the platform is young, and we are not going to put a percentage on it until we can show the method and the sample. Anyone quoting you a no-show reduction figure for their product should be asked the same two questions.
Related: running a networking event people return to, and how big should a networking event be.