Why We Built Sponja

Every webinar host knows the feeling. You spent weeks on the content, ran a solid session, watched the attendee count tick up. Then the call ended, and the silence started.

The webinar funnel has a well-documented top end: platforms, ads, registration pages, reminder sequences. But the bottom of that funnel, the part where attendance turns into revenue, has been left almost entirely to guesswork. That is the gap Sponja was built to close.

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The Webinar Funnel Has a Hole in It

The top of the webinar funnel is well understood. You drive registrations, send reminders, and get people into the room. What happens after the session ends is a different story.

Research from ON24 consistently shows that webinars generate some of the highest-intent leads of any digital channel. The problem is that intent does not automatically become revenue. It requires a follow-up that reaches the right person with the right message at the right time.

Most hosts are not equipped to do that. They have a list of attendees. They do not have a ranked list of who was engaged, who was price-shopping, who dropped off early, or who stayed for every question. So they send the same follow-up to everyone and wonder why conversion rates stay low.

That is not a copywriting problem. It is an intelligence problem.

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What 200+ Webinar Hosts Told Us

Before we wrote a single line of code, we ran a survey. We wanted to understand what webinar hosts actually experience after their events, not what the industry assumes they experience.

The results were consistent in a way that surprised even us.

When asked what they wished they knew after their last webinar, the single most common answer was: who was actually interested in buying. It came up far more than any other response. The runners-up, knowing which attendees to follow up with first and what content made people want to buy, are really the same problem stated differently.

When asked what typically happens after their webinar, the dominant answers were mostly silence, some results but less than expected, and not tracking it at all. A small minority reported consistent sales or strong engagement. The majority were somewhere between disappointed and flying blind.

The platforms they used did not change this pattern. Zoom hosts, Google Meet hosts, Teams hosts, all reported the same experience. The problem is not the technology in the room. It is the absence of intelligence after the room closes.

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The Tools That Exist Were Not Built for This

Zoom gives you an attendance report. It tells you who joined, for how long, and sometimes what they asked. That data is genuinely useful, but it requires manual interpretation, and most hosts never open the file.

CRMs store contact records. They can tell you a lead came from a webinar, but they cannot tell you whether that lead was engaged or distracted, whether they asked questions or sat passively, whether they are worth a personal call or a standard nurture sequence.

Email platforms send to everyone on the list equally. They are built for broadcast, not for behavior-based prioritization.

The gap between these tools is where most webinar revenue gets lost. You know who registered. You know who showed up. You do not know who was actually interested in buying, which is exactly what the people in our survey said they wished they knew.

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What Sponja Does Differently

Sponja connects to your Zoom session after it ends. It reads the behavioral signals that already exist in your session data: how long each attendee stayed, whether they asked questions, how they engaged with polls, what moments drove the most activity.

From those signals, it builds a buyer intent score for each attendee. Hot, warm, or cold. Not based on gut feeling, but based on what they actually did during the session.

Then it writes the follow-up emails. Not one email blasted to everyone. Personalized messages for each segment, tailored to what each group engaged with and what they are likely to need to take the next step.

You review and send. The hard part, figuring out who to prioritize and what to say, is handled automatically.

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Who We Built This For

Sponja is built for anyone who puts real effort into running an event and then loses the thread afterward.

Coaches and consultants who run free webinars to fill their programs. Course creators who host paid workshops and need to convert attendees into repeat buyers. B2B teams running product demos or recurring group calls where every qualified lead matters.

The common thread is not industry or format. It is the gap between a room full of people and a clear picture of who is worth following up with and how.

We built Sponja because that gap existed, and no one was filling it well. If you recognize the problem, the tool is ready for you.

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