Webinar Registration & Reminder Ops: Stop Leaving Attendance to Chance
Capture sign-ups on your own registration page, send timed confirmation and reminder emails, then reconcile who actually attended — with an organizer approving the reminder schedule and the attended/no-show split before anything feeds follow-up.
A web tool with a public registration form that captures sign-ups with consent, schedules confirmation and 1-week / 1-day / 1-hour reminders through Resend, lets you import the post-event attendees CSV, reconciles registered vs attended, has an organizer approve the reminder content and the attendance reconciliation, and exports clean attended / no-show CSVs ready for your CRM.
Before you start
- A Supabase account (free)
- A Vercel account (free)
- A Resend account (free)
- Your webinar's date, time, and join link
- An attendees CSV you can export from your webinar tool after the event
- Claude Code or any AI coding agent
The problem this kills
You're running a webinar, but you don't have a fat enterprise platform that does everything. So registration lives in one tool, reminders live in your own head (or a frantic calendar block the morning of), the join link gets copy-pasted into a dozen one-off emails, and after the event you have a CSV of attendees from one system and a list of registrants from another — and no clean way to tell who showed up versus who ghosted.
The result is predictable: lower attendance because people forgot, double sign-ups from the same person, a join link that leaked or went to the wrong inbox, and a post-event scramble to figure out who to follow up with as "attended, send the recording" versus "no-show, send the catch-up." Attendance ends up left to chance. You don't need a six-figure platform to fix this, and you don't need to be a developer.
What you'll build
A simple internal web tool plus a public registration page. Someone clicks your link, fills in name, email, company, and a consent checkbox, and is registered — once, because the tool dedupes on lowercased email per event so one person can't register twice. They immediately get a confirmation email with their personal join link. Behind the scenes the tool schedules timed reminders at 1 week, 1 day, and 1 hour before the event through Resend. After the webinar you import the attendees CSV from whatever tool you ran it on; the app matches attendees back to registrants by email and produces a clean attended vs no-show reconciliation. You review it, click Approve, and the tool stamps each person's status and gives you CRM-ready CSVs — one segment for attendees, one for no-shows — to drop into your follow-up.
What's inside the Implementation Plan
The downloadable plan is a step-by-step file you paste into an AI coding agent. It opens by interviewing you about your business — which webinar tool you run events on, exactly what columns your attendees export has, how you generate and deliver join links, your typical and peak registration volumes, your reminder timing and copy, and your messy edge cases — and then it tailors the data model, the reminder schedule, and every later step to your answers. This is not a generic template; the agent reflects a short spec back to you and waits for your thumbs-up before it builds anything. From there it walks the agent through the registration form, the dedupe-and-consent capture, the reminder scheduler, the organizer's approve-the-schedule gate, the attendee CSV import and reconciliation, the approve-the-split gate, and the segmented CSV export — each step with a ready-to-copy prompt. There's also a fallback so you can build the whole thing today even with no API to your webinar platform.
The governance it includes (this is the point)
This is real marketing-ops tooling that touches people's contact data, so it ships with the controls a team needs: login so only your team can manage events and see registrant lists, row-level security so you only ever see your own organization's events and registrants, a complete audit trail of who edited the schedule, who approved sends, and who reconciled attendance and when, a hard human-approval gate so no reminder batch goes out until an organizer approves the content and timing and no attended/no-show split feeds follow-up until an organizer signs off, and duplicate guards keyed on lowercased email per event so the same person can't register twice and the same reminder can't be sent twice. Consent wording is stored per registrant with a timestamp, so you can prove how and when someone opted in.
Who it's for
Marketing and event-ops people who run webinars without a dedicated platform's full stack — anyone juggling a registration form here, an email tool there, and a post-event CSV cleanup that eats a morning. If you can describe how you run a webinar today, you can build this.
You've got this — start with the plan, paste the first prompt, answer the interview, and you'll have your registration page taking sign-ups the same weekend.