A useful report gives Google a specific delivery problem it can investigate. Prepare the evidence before opening the form.

Record the affected domain, message type, dates and symptom. Distinguish a rejected message from one accepted into spam, and include the complete rejection response when one exists.

Check whether you can submit

Google's reporting instructions require verified domain ownership and compliance with the sender guidelines. The message you report should be SPF and DKIM authenticated, and its From domain should match the domain used for the report.

Dashboard access shared by someone else should not be assumed to confer ownership. Have the verified owner handle the report if necessary.

Create the report

  1. Sign in to Postmaster Tools.
  2. Choose Report delivery issue at the bottom left.
  3. Select the affected sending domain.
  4. Choose Create new report and complete the requested fields.
  5. Use Get message info for me when helpful. Copy the impacted message through Gmail's Show original view, paste it into the form and choose Get info.
  6. Review the details and submit.

You can review progress under Report delivery issue and Reported issues for the selected domain.

Keep the evidence focused

My recommendation is to include recent representative examples, the first affected date, the number or share of messages affected in your own logs, and any changes to authentication, audience or sending infrastructure.

Explain the fixes already made and when fresh messages were checked. Avoid describing a dashboard as proof that all requirements are met when an unresolved warning remains.

If the issue followed high complaints, review the mitigation conditions first. Google's spam-rate condition for regaining eligibility is seven consecutive days below 0.3%, subject to the other requirements. Submission does not guarantee a particular result or a response time.

Keep the report reference with your own timeline. Continue collecting fresh evidence from the same stream so that any follow-up explains what changed after submission.

Sources