Five people live.
A room that feels like five hundred.
Pre-schedule timed chat, bulk-import it from a spreadsheet, and rehearse the whole room against your recording before you go live.
✨ Every chat above is scripted by WebinarCaster
Connect Zoom
Authorize once and pull in your upcoming webinars and meetings, then pick the one you're producing.
Write the chat
Add, edit, duplicate or delete lines — hour, minute, second, name, role and message. Or drop in a CSV.
Set the trigger
Start the run the moment your Zoom goes live, or at a precise wall-clock time.
Preview the room
Paste the YouTube or Vimeo recording and watch the whole conversation replay in sync.
Built for producers, not bots
Zoom does not expose an API for injecting messages into a live webinar chat, so WebinarCaster is your production desk: it owns the script, the timing and the rehearsal. Run the timed script alongside your session and paste lines through your co-host account, or use the preview simulator to show stakeholders exactly how the room will feel.