Tracking
Tracking Calendly with SIGNL
A form or calendar inside an embed cannot be read by any script: that is a browser rule, not a limitation of SIGNL. Instead the tracking snippet writes the visitor's id into the embed's link, and Calendly hands it back when somebody submits.
Setting it up
Nothing to set up in Calendly. Install the SIGNL snippet on the page holding the embed and it works.
Where to send it
Point Calendly's webhook at /api/webhooks/calendly on your SIGNL domain.
These steps come from Calendly's own documentation and have not yet been run against a live account. If anything differs, tell us and we will correct it.