Original research, 2026. Updated October 2026
Eight B2B events and about 11,000 registered attendees. We compare what attendees said they came for, in their own words, with what the registration form recorded. We publish the weak numbers too.
October 2026 update
FOST London put six API and AI conferences under one badge. For the first time, Sena wrote to every registrant with a phone number, and 222 people sent at least one message.
What they came for
45 people
43 people
32 people
26 people
21 people
19 people
Source: FOST London 2026. Share of the 222 people who sent Sena at least one message. Smaller groups not shown.
More than one in ten came for a job. 26 of the 222 people said that they came to FOST to find work. No registration form asked them, and the event had no hiring information to give them.
Each gap below is a page of information that the event did not publish. The organizer now has the list for the next edition.
Swipe the table to see every column
| What they asked about | How often |
|---|---|
| Venue basics: Wi-Fi, cloakroom, badge pickup, nearest station, access, food | About 20 conversations |
| A room-by-room timetable with end times | About 15 conversations |
| Lost tickets, plus-one codes and registration errors | About 10 conversations |
| Recordings and slides after the event | 9 conversations |
| Room changes and moved talks on the day | About 8 conversations |
| Which sponsors hire | 26 job seekers |
The same event also gave us data on attendance. Read the FOST London no-show data, or the full FOST London case study.
At one regional business forum, 60% of profiled attendees said they came to find clients, generate leads and win contracts. That fact appeared nowhere in the registration data. The organizer had planned the event's meeting programme for attendees who came to meet each other as peers.
This result changed how we match people, because almost every meeting format in the industry assumes a room of buyers and learners. When most of the room came to sell, a match on similarity puts competitors at the same table. One attendee told us exactly that, in plain words, after he got his schedule.
The share also changes from event to event. At a developer-focused tech conference, the share was about 15%. You cannot borrow either number, so you have to measure your own, and registration will not do it for you.
These figures come from 128 attendees at a regional SME business forum. People arrive with more than one goal, so the groups overlap and the shares add up to more than 100%.
Why they came, share of 128 attendees
77 attendees
41 attendees
30 attendees
21 attendees
9 attendees
9 attendees
Source: Les Entrepreneurs Haute-Garonne 2026
Swipe the table to see every column
| Reason to attend | Attendees | Share of 128 |
|---|---|---|
| Client acquisition | 77 | 60% |
| Seeking a service or solution | 41 | 32% |
| Seeking partnerships | 30 | 23% |
| General networking | 21 | 16% |
| Logistics and helpdesk only | 9 | 7% |
| Content and learning | 9 | 7% |
The content group came last, even though the whole programme centres on content. It was the main reason for only 7% of the people who told us why they came. Good sessions still matter, because they got people in the door. The programme and the reason to attend are two different things, and only one of them is on paper anywhere.
The mix changes with the format and the audience. The two ends of our data are far apart.
60%
came to sell
Regional SME business forum, 77 of 128 attendees
~15%
came to sell
Developer-focused tech conference, 9 of 58 attendees
With the same product in the same year, the forum had four times the share of sellers. No organizer can borrow this number from another event.
Regional SME business forum: 60% client acquisition. The audience was mostly small business owners and independent consultants: HR advisors, insurance brokers, IT providers, coaches and lawyers. Most of them sell professional services to the same buyer profile. A speed-business format in that room seats sellers with sellers unless something actively prevents it.
Developer-focused tech conference: 9 of 58 attendees, about 15%, said outright that they came to sell. Staff from three sponsors were among them. One attendee said plainly that he did not want sales pitches. Both groups were legitimate attendees, and both met in one directory with nothing to tell them apart.
Multi-stage tech festival: a different pattern again. 78% of conversations were about where to go: which stage, which room, what is on next. With five concurrent stages, attendees first needed to find their way, and the wish to meet people came up only after that.
So "sponsors want to meet attendees" is not a plan on its own. At the first event, a sponsor that sells to SMEs had qualified prospects all around it. At the second, sponsors competed for a minority of the room, and most of the sellers chased the same buyers the sponsors wanted. Those two events need different sponsorship products. Neither organizer had any way to tell which one they had from their registration export.
Of the attendees who talked to Sena at all, 61 to 69% described their work, goals and interests in full. They did more than ask a question.
Share who described work, goals and interests
151 conversations, typical length 5 messages, 55% ran to 5 or more
126 conversations, most of them started as questions about where to go
Share of attendees who talked to Sena. The next section covers everyone else.
At the regional forum, 69% described their goals in full. The typical conversation ran to 5 messages. At the multi-stage festival, the share was 61%, and most of those conversations started with a question about where to go. The goals came out when someone asked which stage to go to.
People told us their goals in conversations they started for other reasons. A form asks for effort and gives nothing back. A conversation answers the attendee's question first.
This rate counts only attendees who talked to Sena. Many registered attendees never did, and that gap is larger. The next section covers it.
One choice matters most: did the organizer put the opt-in on the registration form and promote it? It matters more than the channel, the copy or the technology.
Share of eligible attendees who opted in
159 of 209 eligible participants
274 of 1,596 registered attendees
Share who talked to Sena. We have no opt-in count for this event.
Sources: Les Entrepreneurs Haute-Garonne 2026, FOST Singapore 2026 and one unnamed event
Promoted
Regional SME forum: 159 of 209 eligible participants opted in (76%). 92% of the attendees who received our message replied. Out of everyone who opted in, 65% replied.
Lightly promoted
Multi-stage festival: 274 of 1,596 registered attendees opted in (17%). Of the attendees who received our message, 67% opened the message and 38% replied. In all, 309 attendees talked to Sena, or 19% of registered.
Not promoted
One event where the organizer never told attendees about Sena: engagement sat near 6%.
We publish the 19% and the 6% because a report where everything worked is a sales pitch. In the middle case, two-thirds of attendees opened the message and only a third answered it. People saw it, and it did not make its value clear enough to earn a reply. At a content-led event, it also competed with the programme itself.
When you judge any attendee-engagement product, ask about this number first. Ask how many registered attendees at a named event replied. A rate over "active users" tells you nothing.
Eight events in Europe, North America and Asia, from 2025 to 2026. We publish them anonymized and with client consent.
Swipe the table to see every column
| Event | Format | Registered | Sessions | Sponsors | Engagement |
|---|---|---|---|---|---|
| Les Entrepreneurs Haute-Garonne (CPME31) | Regional SME business forum | 462 | 63 | 51 | 154 of 209 speed-business participants |
| FOST Amsterdam | Two-day tech conference | 707 | 110 | 21 | Focused first run, not an engagement benchmark |
| FOST Munich | Two-day tech conference | Live July 2026 | 121 | 28 | 58 attendees identified |
| FOST Singapore | Two-day festival, 5 concurrent stages | 1,596 | 118 | 15 | 309 of 1,596 (19%) |
| FOST New York | Two-day conference | 1,306 | 195 | 34 | 58 attendees fully profiled |
| FOST / Apidays Paris | Multi-conference festival | 5,000 | 524 | 133 | 115 attendees profiled, 2,634 questions answered |
| VivaTech (Hub Institute Explorer Tours) | Large trade show, delegation tours | Delegation tours only | 260 | 2,996 exhibitors | No engagement figure published |
| FOST London | Six co-located conferences, one badge | 1,411 pre-registered | 109 recommended | 33 | 222 people sent a message, and 201 replied to the first one |
In total: about 10,500 to 11,500 registered attendees, more than 1,400 sessions and more than 3,200 sponsors and exhibitors. We give engagement for each event, because one average across events with different promotion tells you nothing.
Sena talked with attendees who opted in, on WhatsApp and web chat, before and during each event. Every figure comes from one named event, and we do not average across events.
The limits
This report contains no attendee names, employer names, contact details or quotes tied to a person. We publish totals for each event, with client consent.
You can do four things, and none of them need you to buy from us.
You can cite and reuse this research under CC BY 4.0. If you want us to clarify a figure, or think we read our own data wrong, tell us. We will correct this page before we defend it.
Ask the attendee directly, in a channel they answer, before the event. A registration form captures name, company and job title because that is what it is for. At our events, 61 to 69% of attendees who talked to Sena described their goals in full. A conversation answers the attendee's question first, and that makes the difference.
It varies enormously by event type. At a regional SME business forum, 60% of the attendees who told us their goals came to find clients. At a developer-focused tech conference, 9 of 58 attendees came to sell, about 15%. If you do not know which number describes your event, your plan for attendee meetings is a guess.
A job title tells you little about need. Two people with the same title at the same event often want opposite things, and registration never asks. In our data, the best guide to a useful match was one sentence from the attendee about their own goal. No registration form at these events asked for it.
Opt-in placement and organizer promotion, by a wide margin. Where the opt-in sat on the registration form and the organizer promoted it on site, 76% of eligible attendees opted in. At that event, 92% of delivered messages got a reply. Without promotion, engagement fell to around 6%, with the same product on the same channel.
It covers about 10,500 to 11,500 registered attendees at eight B2B events in 2025 and 2026. It also covers about 1,400 sessions and more than 3,200 sponsors and exhibitors. Yes, you can cite it. Read the limits first. These eight events chose to use Sena, so they do not stand for all events.
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