Google Feedback Loop (FBL) Explainer
Senders keep asking 'where's Google's FBL?' — the answer is they don't have one in the classic sense, and Postmaster Tools is the substitute.
Google does not run a per-message feedback loop like Yahoo CFL or Microsoft JMRP. They never have. The closest thing is Postmaster Tools' aggregate Spam Rate dashboard.
- Spam Rate: aggregate % of your mail Gmail users marked as spam, over a rolling window. Below 0.1% green, 0.1–0.3% yellow, above 0.3% red.
- IP Reputation: per-sending-IP score derived from Spam Rate + other signals.
- Domain Reputation: same, scoped to your sending domain.
- Authentication: SPF/DKIM/DMARC pass rates.
No per-recipient detail. You can't suppress individual complainers; you can only watch trends and reduce overall send to recover.
Explains what Postmaster Tools' spam-rate dashboard surfaces, why it isn't per-message FBL data, and how to act on the aggregate signal.
After someone tells you to 'enroll in Google FBL'. The conversation needs a reset.
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Reference pages tell you the benchmark. Outsolvi tells you whether your team is above or below it — per-rep, per-deal, per-week — and which behavior changes move the number. From $7/user/mo yearly.
See your numberNate built Outsolvi after watching every email-tracking tool he had ever used lie to him about opens. Outsolvi runs Tier 1 to 5 confidence scoring on every open, native in Outlook and Gmail, so the number on the dashboard is one a rep can actually act on.
We update these pages when the underlying mechanics change — new mailbox-provider rules, new tracker behavior, new measurement gaps. The dates above are real revisions, not auto-touches.