Forms on granvl-served pages always POST to destinations you choose. granvl’s servers never see the form’s contents. That’s the privacy moat. What granvl records is the event (a conversion happened, on this variant, in this session), never the field values.
Destinations
Add destinations in the funnel’s Integrations tab. Supported out of the box:
- Webhook (any URL), Zapier, Formspree
- CRMs: GoHighLevel, HubSpot, ActiveCampaign
- Supabase, Forms.app
- LeadProsper (lead distribution / ping-post)
A funnel can have multiple destinations at once: the page wires the form to the first and mirrors the submission to the rest from the visitor’s browser (keepalive fan-out). granvl is never in the data path for any of them.
LeadProsper
Two-tier setup for lead sellers:
- Team-level: connect your LeadProsper dev API key under the Integrations settings (stored encrypted).
- Per-funnel: pick a campaign → supplier, then map your form’s field names to LeadProsper’s. granvl resolves the supplier credentials into the form automatically.
LeadProsper field names are case-sensitive, and it requires separate FirstName and LastName fields, never a single name input.
+16503271100, 10-digit, parentheses, or dashes) in the Integrations tab and granvl formats the phone field at serve time for every destination. Don’t hand-format numbers in your page HTML.
Qualification
Define a qualification rule per funnel (e.g. “state is CA and loan balance > $200k”) and granvl evaluates it in-memory at submit time. The lead is marked qualified/unqualified without the answers ever being stored. Qualified counts and cost-per-qualified-lead then appear throughout analytics. CRM-side qualification can also be pushed back later via the API/MCP (mark_lead_qualified).
Redirects
Give the form a _next field pointing at your thank-you page. granvl carries conversion attribution through the redirect automatically: the thank-you arrival credits the page (and variant) that hosted the form. 
