Vendor guide
Does Klaviyo respect opt-outs?
On 28% of the 313 US e-commerce brands we found tracking after an opt-out, Klaviyo was one of the tags still firing.
Free. No account. Results in about a minute.
28%
of brands in our data had Klaviyo firing after an opt-out (89 of 313)
US e-commerce brands where Consentinel found trackers still firing after a visitor opted out, by clicking reject or sending Global Privacy Control. Sites that passed aren't in this data, so these figures describe brands that leak, not all brands. Read the full report.
What it is
Klaviyo's onsite script powers signup forms and tracks browsing for email and SMS marketing.
Why it keeps firing
Stores install it for signup forms and treat it as essential, so it loads before any consent choice and keeps running after an opt-out.
How to fix it
Delay Klaviyo's onsite script until marketing consent, using your consent app's script blocking or Klaviyo's consent settings.
Questions
Does Klaviyo respect Global Privacy Control on its own?
Not reliably. Whether Klaviyo stops for an opt-out depends on how it's installed on your site. On 89 of the 313 brands in our data, it kept firing after the visitor opted out.
How do I stop Klaviyo after an opt-out?
Delay Klaviyo's onsite script until marketing consent, using your consent app's script blocking or Klaviyo's consent settings.
How do I check whether Klaviyo fires on my site after an opt-out?
Load the page with Global Privacy Control on, or after clicking reject, and watch whether Klaviyo still sends requests or sets cookies. Consentinel's free scan does this and names every vendor that ran, with the request as proof.
Other vendors: Meta · Google Ads · TikTok · Pinterest · Microsoft Ads · Attentive · Snap
Check Klaviyo on your site.
Free, about a minute. We test reject, accept and Global Privacy Control, and name every tag that ran when it shouldn't have.
Free. No account. Results in about a minute.