Google adds plain-language Deliverability analysis verdicts to Postmaster Tools

Google has added a "Deliverability analysis" section to Postmaster Tools v2, sitting under the Compliance status dashboard. Instead of leaving senders to interpret raw spam-rate and authentication charts, the new section issues a plain-language verdict on how Gmail perceives mail from a domain, together with a short explanation and a specific recommended action. The feature began appearing in senders' accounts in early June 2026; Google documents it in the Postmaster Tools dashboards help article rather than a standalone announcement, and deliverability practitioners were the first to map out how it behaves in practice.

Why it matters

The verdicts exposed through the accompanying API cover a spectrum from "users want this mail" through divided or unclear signals down to "users don't want this mail" and an abuse/spam classification — seven statuses in all, plus a fallback for unspecified reasons. That is a notable shift in posture. Gmail has historically shown senders inputs — complaint rate, authentication pass rates, domain reputation — and left the diagnosis to them. Deliverability analysis is Gmail writing the diagnosis itself.

Two practical implications stand out. First, the verdicts lean heavily on recipient behavior, not just technical compliance: a domain can pass SPF, DKIM and DMARC cleanly and still draw a negative verdict if users signal they don't want the mail. That matches the broader 2025–2026 trend of mailbox providers scoring the whole program, not the DNS records. Second, because the statuses are exposed via API, monitoring vendors can — and quickly did — start alerting on verdict changes, which makes this the most actionable feedback channel Gmail currently offers bulk senders.

The feature lands as Google winds down the legacy Postmaster Tools interface and its reputation dashboards, positioning compliance status and deliverability analysis as their replacement. Senders who relied on the old domain and IP reputation panels should get familiar with the new verdicts now; see our summary of Gmail's sender requirements for the compliance baseline the dashboard measures against.