Klaviyo not registering Gmail spam complaints?

Hello everyone,

I was just going thru our deliverability reports trying to make sure that our metrics are within the requirements that Gmail will start enforcing on February 1st. And it struck me as odd that on our last campaign, which had around 15,000 recipient on Gmail, we did not get a single spam complaint.

In Google Postmaster, however, our spam rate for this campaign was a whopping 0.9% (Roughly 8x our usual spam complaint rate)

I tried looking thru the Klaviyo documentation but could not find any mention of Gmail spam complaints not being registered within Klaviyo. Is this a known issue?

Thank you!