Every webinar platform publishes its own "average attendance rate," and no two of them agree — ON24 says 60%, Livestorm says 47.7%, GoToWebinar says 44%. That's a real disagreement between real vendors measuring their own customers. What's not real: two entire "joint industry studies" — a GoTo-and-Bizzabo report covering 19,400 webinars, and an ON24-GoTo-BrightTALK analysis of 12,400 more — that circulate across marketing blogs with suspiciously precise numbers and don't trace to any report either company has actually published.
This piece separates the two: the vendor-reported benchmarks that are real (if platform-specific and non-comparable), and the specific, actionable-sounding claims about reminder counts, send timing and WhatsApp multipliers that turned out to be marketing folklore when we tried to trace them to a source. Then it covers the one place a genuinely controlled study exists — a different domain entirely — and what to actually build first.
Key takeaways
- There's no single "average webinar no-show rate." ON24's own platform data says a 60% show-up rate (2025, up from 57% in 2024); Livestorm's says 47.7%; GoToWebinar's says 44%. Two widely-cited "joint industry studies" citing far more precise numbers (19,400 webinars; 12,400 webinars) don't trace to any report either named company actually published.
- Timing shows a real, if modest, pattern in one vendor's own 2025 data: Tuesday and January are the best-performing day and month for show-up rate; July and August are the worst (Livestorm, 33,786 sessions, 7.06M registrations).
- Precise reminder-count claims ("3 emails lift attendance 28%", "a day-before-and-hour-before reminder boosts turnout 83%") don't trace to any real study on any of the six platforms we checked. What Zoom's own 2026 data does show: whether someone clicks anything at all before the event predicts live attendance better than how many reminders they received.
- Every WhatsApp-specific "cuts no-shows by X%" figure we could find is either a WhatsApp API reseller's unverifiable client claim or a citation chain that ends in a dead link. The one rigorous, peer-reviewed evidence for a text reminder's effect comes from a 2016 pediatric-clinic trial, not a webinar study.
- Calendar-invite and no-show-follow-up statistics are the thinnest part of this space — every specific lift number we traced (20–30% from one case study, an unverified $120,000 recovered-revenue claim, a 50% replay-email open rate) failed to check out. The mechanism still makes sense; the multiplier attached to it usually doesn't.
So what's a normal webinar no-show rate?
Search for "average webinar attendance rate" and you'll quickly run into two suspiciously specific numbers: a "GoTo and Bizzabo Webinar Attendance Optimization Report" claiming 19,400 webinars analyzed and a 44–57% show-up range, and an "ON24, GoTo and BrightTALK" joint analysis of roughly 12,400 webinars putting the median at 41.6%. We checked GoTo's own blog, Bizzabo's own benchmark reports and ON24's own blog directly. Neither joint report exists on any of the three companies' own sites — the numbers appear only on SEO listicle pages that never link to an actual source, the classic shape of a fabricated statistic circulating through AI-assisted content mills.
What the vendors themselves actually publish is real, just not comparable to each other — each one is describing its own platform's customer base, in its own year, with its own (often undisclosed) methodology.
| Source | What they report | Basis |
|---|---|---|
| ON24, 2026 Webinar Benchmarks Report | 60% registration-to-attendance in 2025, up from 57% in 2024 | ON24's own platform data; underlying sample size not disclosed in the public blog post |
| Livestorm, 2026 Webinar Benchmark Report | 47.7% show-up rate (2025 platform data); 51.3% in a companion practitioner survey | 33,786 webinar sessions across 3,199 organizations, 7.06M registrations (Jan–Dec 2025), plus a survey of ~850 go-to-market professionals |
| GoTo (GoToWebinar), "10 Webinar Benchmarks Every Marketer Should Know" | 44% average attendance rate | That post describes its own sample only as "thousands and thousands" of webinars; a separate 2019 GoTo post cites 250,000+ webinars analyzed but doesn't restate this specific figure |
| Univid, cited via Zoom's 2026 blog | 49% live attendance; 57% including on-demand replay viewing | 2,000+ webinars, 325,000+ tracked attendees, Jan 2023–Aug 2026 — skewed toward B2B SaaS/professional-services webinars, 70% European |
| BigMarker, 2024 B2B Benchmark Report | 40–60% for general, broad-audience content; "well over 90%" for small, highly personalized audiences | Top 10% of highest-performing B2B webinar programs on BigMarker's own platform — not a cross-industry average |
Livestorm's own report is worth a specific flag: alongside the 47.7% figure, it also states show-up rates "improved consistently... vs 2024" while separately printing a 2024 baseline of 48.9% and calling the year-over-year change a decline — two claims in the same report that contradict each other, with the 2024 comparator's methodology undisclosed. We're citing the disclosed 2025 figure (47.7%) and flagging the year-over-year comparison as unreliable rather than repeating it as a confirmed trend.
Does when you run it change who shows up?
One dataset does show a real, if modest, timing pattern — Livestorm's own 2025 platform data (the same 33,786-session, 7.06-million-registration set behind the show-up-rate figure above), broken out by day of week and by month.
- By day of week, Tuesday edges out the rest at a 51.7% show-up rate — though Monday is barely behind it at 51.5%, close enough that "Tuesday is best" is more a narrow lead than a wide margin.
- By month, January (50.4%) is the strongest performer and the summer months (July at 45%, August at 42.9%) are the weakest — a pattern consistent with people simply being on vacation or otherwise checked out.
This is one vendor's descriptive data, not a controlled experiment — it can't prove that moving your webinar to a Tuesday in January causes a lift, only that Livestorm's own customer base behaved that way in 2025. If the day and month are otherwise a coin flip for you, though, it's a reasonably-evidenced coin to load.
Do more reminder emails actually get people to show up?
This is where the specific, confident-sounding numbers fall apart fastest. A widely-repeated claim that a day-before-and-hour-before reminder sequence lifts attendance by 83% appears on Eventbrite's own blog — but Eventbrite attaches no study, sample size or data source to it anywhere on the page; it's a bare, uncited assertion sitting next to genuinely factual product details. A claim that three reminder emails lift attendance by 28% traces to a source cited as "Marketing LTB" — a marketing blog, not a research organization, and one that carries the number with no study, sample or methodology of its own. And a claim that "ON24 reports day-of reminders drive 38% of total attendance" doesn't appear anywhere on ON24's own site — its actual 2025 benchmarks post covers conversion rate, attendee counts and engagement in detail, with no reminder-timing statistic at all.
We checked six major platforms' own blogs directly — Livestorm, Demio, GoToWebinar, Mailchimp, HubSpot and Eventbrite — looking specifically for a controlled comparison of reminder count or timing against attendance. Every one of them recommends a cadence (something close to: a confirmation, a reminder the day before, a reminder the morning of or an hour before). None of them presents that cadence as the output of a test — it's uniformly framed as best-practice advice, not measured data.
- 67% of marketers report relying on personalized email sequences — invitation, reminders, follow-up — as part of webinar promotion, per Livestorm's own 2024 survey of marketers. That's a real usage statistic (how many people do this), not an attendance-lift statistic (how much it helps).
- The one specific, sourced finding on this question comes from Zoom's July 2026 blog, drawing on its own (methodology-undisclosed) 2026 performance data: attendees who clicked on anything at all between registering and the event — a resource link, a pre-event poll, a short teaser video from the speaker — showed significantly higher live attendance than those who only received reminders, and that single-click engagement was "more predictive of show-up than the number of reminder emails sent."
The honest read: sending reminders isn't wasted effort, and nobody in this space recommends skipping them. But the specific lift numbers attached to specific counts and timings don't hold up to a source check — what the one real data point suggests is that a reminder asking for a click does more than a reminder that doesn't.
Does WhatsApp beat email at cutting no-shows?
The claims here read like a pattern once you trace enough of them: a WhatsApp Business API reseller's page claims WhatsApp reminders lift attendance 62% over email, sourced to nothing but "our clients" — no study, no sample, no independent data. A widely-repeated "WhatsApp reduces no-shows by 35%" line traces through one marketing blog to another, ending in a dead link. A "sending a day-of text increases attendance by 10%" claim gets attributed to BrightTALK by one aggregator and to GoToWebinar by another — neither company's own site contains it. And generic "WhatsApp beats SMS/email by 30–40%" lines circulate mainly on the blogs of companies that sell WhatsApp API tooling.
What we found instead, in a domain that's actually studied rigorously, is a real randomized controlled trial — not about webinars, about pediatric medical appointments.
- In this 2016 randomized trial at a single pediatric clinic, every patient got the standard voice-call reminder; the intervention group additionally got a text message. No-shows fell from 38.1% to 23.5% — a 14.6-percentage-point drop, statistically significant (p = 0.04), with patients in the text group about twice as likely to keep, cancel or reschedule rather than simply not show (adjusted odds ratio 2.12).
- It's a small trial — 169 patients total, one clinic, published in 2016 — and it measures healthcare appointments, not webinar registrations. The authors themselves flag limited generalizability.
Pediatric clinic no-show rate
In Israel specifically, 99% of the population uses WhatsApp, ahead of YouTube (97%) and Facebook (88%), per the Israel Internet Association's 2025 index — reach isn't in question. What's not backed by any source we could verify is a specific multiplier for webinar no-shows. The honest framing: a second channel plausibly helps, the way it helped in a small pediatric trial, but treat WhatsApp as added coverage for people who opted in and prefer it — not a proven percentage lift over email.
What about calendar invites, waitlists, and no-show follow-ups?
This corner of the research turned up the least solid ground of anywhere in this piece. A calendar-app vendor cites a single customer case study claiming its add-to-calendar links lifted one client's attendance 20–30% — a real case study, but one customer, with no disclosed methodology. A generic "calendar integration cuts no-shows 15–25%" line appears on SaaS content pages with no study behind it at all. A claim that AI-based outreach tools drove a 20% adherence improvement and "up to $120,000 recovered annually," attributed to a 2022 Health Affairs study, only shows up inside vendor case-study blogs — we could not locate the actual Health Affairs article carrying that figure. A widely-repeated "50% of no-shows open a replay-link follow-up email, per GoToWebinar" line doesn't appear anywhere on GoToWebinar's own site. And scheduling vendors' own "industry average no-show rate" figures for sales calls (cited in ranges like 20–35% or 20–40%) come with no named underlying study either.
Rather than repeat a lift number that doesn't survive a check, here's what's mechanically true regardless: a live calendar invite removes a step between someone deciding to attend and it actually landing on their calendar, and a waitlist turns "there's no room" into a warm lead the moment a spot opens up. Neither needs an invented percentage to be worth building — they're plumbing, not persuasion.
What should you actually automate, in what order?
- 1Send the registration confirmation the instant someone signs up — with the join link, a calendar invite, and (for a Zoom-connected event) automatic registration in the meeting itself, so nobody has to do anything twice.
- 2Layer in the reminder cadence every platform recommends: one the day before, one the morning of or an hour before. Nobody has published proof of the exact optimal count, but skipping reminders entirely is the one thing every source agrees hurts turnout.
- 3Split the day-of reminder by channel where you have consent for both: WhatsApp for contacts who opted in and prefer it, email for everyone else. Treat this as coverage across how people actually check messages, not a proven multiplier for one channel over the other.
- 4Build the no-show branch as its own step, targeted specifically at the "no-show" status — a short "here's the recording" message plus one clear next action, rather than folding it into the same message everyone else gets.
- 5If it's a recurring course or workshop, wire the whole flow to the product once rather than to each cohort — a single automation then covers every future cycle's reminders, follow-ups and waitlist nudges automatically.
In oToK, this is one automation built on real event triggers — registration, cancellation, attendance status and date/time offsets before or after the event, each targeted at whichever statuses you pick (registrants, attendees, no-shows, waitlist). A connected Zoom account handles registration and syncs attendance back automatically; Google, Outlook and Apple calendar sync keeps the invite current; and linking the event to a product means the automation covers every future cohort of a course without rebuilding it per cycle.
Frequently asked questions
- What's a normal webinar no-show rate?
- There's no single agreed-upon number — vendors reporting their own platform data range from 44% (GoToWebinar) to 60% (ON24, 2025), with Livestorm at 47.7% and Univid/Zoom around 49%. Two "joint industry studies" that circulate with much more precise-sounding figures (19,400 webinars; 12,400 webinars) don't trace to any report either named company has actually published — treat those specific numbers as fabricated.
- Does sending more reminder emails increase webinar attendance?
- No controlled study we could find tests this directly. Every major platform (Livestorm, Demio, GoToWebinar, Mailchimp, HubSpot, Eventbrite) recommends a reminder cadence as best practice but presents no data proving a specific count or timing beats another. The one sourced 2026 finding, from Zoom, is different: whether someone clicks anything at all before the event predicts live attendance better than how many reminders they received.
- Does WhatsApp reduce no-shows more than email?
- Every WhatsApp-specific lift number we could find — 62%, 35%, 10%, 30–40% — traced back to an unverifiable vendor claim or a dead citation link, not a real study. The one rigorous, controlled evidence for a text reminder's effect is a 2016 pediatric-clinic trial (not a webinar study) showing added texts cut no-shows from 38.1% to 23.5%. Treat WhatsApp as useful added coverage for opted-in contacts, not a proven percentage improvement over email.
- Does the day or month of a webinar affect turnout?
- In Livestorm's own 2025 platform data (33,786 sessions, 7.06 million registrations), Tuesday and January show the highest show-up rates, and July and August the lowest — a real pattern in one vendor's dataset, though not proof that changing your date alone causes a lift.
- What's the first no-show automation to build?
- An instant registration confirmation with a calendar invite, a reminder the day before and the morning of, a channel split between WhatsApp and email where you have consent for both, and a separate no-show-specific follow-up branch — built once against the event (or the product, for a recurring course) rather than rebuilt per session.
