Study first
Review the ideas behind the questions
Review the checks that matter when email performance drops and the business wants to keep sending. The quiz asks you to choose actions that reduce delivery risk instead of masking the problem.
Start with requirements, not guesses
Gmail sender requirements cover authentication, DNS, TLS, spam rate, message format, and sender identity.
- Bulk senders to personal Gmail accounts need SPF, DKIM, DMARC, aligned direct mail, and one-click unsubscribe for marketing and subscribed messages.
- Messages that do not meet authentication requirements can be rejected or marked as spam.
- The From domain, authentication domain, and sending setup should be checked before blaming the email creative.
Read spam and delivery signals together
A deliverability incident is rarely solved by one metric. Review complaint rate, delivery errors, authentication, and recent sending changes together.
- Gmail asks senders to keep Postmaster spam rates low and avoid reaching 0.30% or higher.
- Postmaster dashboard data is not real time, so fixes may not appear immediately.
- Shared IP reputation can be affected by other senders using the same IP address.
Control volume after a change
Large or sudden changes can create delivery risk even when the message itself is legitimate.
- New or larger sending volume should start with engaged recipients and increase gradually.
- Major infrastructure or header changes should be ramped separately and monitored.
- If Gmail returns quota or rate errors, reduce sending, identify the cause, and increase carefully after recovery.