What is Google Postmaster Tools? A Plain-English Guide
Google Postmaster Tools shows your domain and IP reputation, spam rate, authentication results and delivery errors for Gmail. It is essential for any serious sender.
Why it matters for deliverability
Understanding Google Postmaster Tools is part of seeing what Gmail thinks of you. Get it right and more of your mail reaches the inbox; get it wrong and even legitimate mail can be filtered.
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How Rainmail helps
Rainmail sends from your own domain on a dedicated, isolated IP with SPF, DKIM, DMARC, reverse-DNS and managed warm-up handled for you, plus an AI that watches your list health and deliverability — and it welcomes the senders Amazon SES, SendGrid and Mailchimp reject, from $8. Run the free 10-second checker or see plans.