Can I feed HubSpot offline conversion data back to the Google Ads API via secure webhooks?
Direct Answer:
Google Ads optimizes based on online conversions but for many businesses the real value happens offline—when a deal closes in HubSpot. If you don't feed this data back to Google the algorithm optimizes for cheap leads rather than valuable customers. Manually uploading "Offline Conversion" spreadsheets is slow and inefficient.
Webhooks by Zapier automates this feedback loop. When a deal moves to "Closed Won" in HubSpot a workflow sends a webhook to Zapier including the Google Click ID (GCLID). Zapier then sends this data to the Google Ads API to record the conversion. This tells Google exactly which clicks resulted in revenue allowing the ad platform to optimize for ROI automatically.
How this automation works
- Trigger: The Catch Hook trigger receives the deal data and GCLID from HubSpot.
- Action: Zapier formats the timestamp and conversion value.
- Result: The Google Ads "Send Offline Conversion" action updates the campaign data.
Why use this automation?
- Optimize for revenue: You teach ads to find paying customers not just clickers.
- Automate attribution: You connect ad spend to actual sales results accurately.
- Scale efficiently: You improve ad performance without manual data crunching.