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Do you meet Gmail’s sender requirements?
Since February 2024 Google enforces its bulk-sender rules with the bulk folder. This checks your domain against Google’s own published requirements — and tells you plainly which ones a DNS scan cannot see, instead of hiding them behind a compliance badge.
- SPFGoogle requiresSet up SPF email authentication for your domain.
- DKIMGoogle requiresSet up DKIM email authentication for your sending domain.
- DMARCGoogle requiresSet up DMARC; the From: domain must align with SPF or DKIM.
- One-click unsubscribeGoogle requiresMarketing messages must support one-click unsubscribe with a visible link.
- TLS and reverse DNSGoogle requiresTransmit over TLS from IPs with valid forward and reverse DNS.
- Spam rateGoogle requires“Keep spam rates reported in Postmaster Tools below 0.30%.”
The requirement you can’t check from here
Google’s line is “keep spam rates reported in Postmaster Tools below 0.30%” — and that number exists nowhere in DNS and nowhere in Klaviyo. Gmail reports complaints only to Postmaster, so an account can read 0.01% in its ESP while Gmail files it at ten times that. SpamSpike reads Google’s measurement, joins it to your Klaviyo sends, and names the send that moved it.
See how SpamSpike measures it →Source — 1 vendor document
Every requirement above is Google’s, from Email sender guidelines, read 2026-08-20. The scan performs DNS lookups only: your domain is never fetched, and nothing you type is stored.