Short answer: Open your public GTM container and check the enhanced conversions setting on each Google Ads conversion tag. Then send your own form with DevTools open: the conversion request should carry an em parameter, tv.1~em plus a long hash. On 5 Nov 2026, 347 of 886 sites with Google Ads conversion tags (39.2%) had it on at least one tag. Only 76 had it on every tag.

What does enhanced conversions do?

On a conversion, the Google Ads tag also sends the email the visitor typed, hashed with SHA256 in the browser. Google matches it to signed-in accounts and recovers conversions cookies miss ( Google Ads Help ).…