Google Postmaster Tools
Google's free dashboard showing your spam rate, domain and IP reputation, authentication and delivery errors for mail sent to Gmail users.
Free API
Visit Google Postmaster Tools (opens in a new tab) Follow Google Postmaster Tools updates
Bottom line
Google Postmaster Tools is Google's own free dashboard for how Gmail rates the mail you send to personal Gmail accounts. Every cold email sender targeting Gmail inboxes should have it set up on each sending domain. It costs nothing and needs only a Google account and a DNS record per domain.
Stands out for: It is the only place to see the user-reported spam rate and compliance status Gmail itself measures you on, where third-party tools estimate placement from seed tests. Paid tools such as GlockApps and Warmy pull their Gmail reputation data from this same source.
Watch out for: Data covers only personal Gmail addresses, so it says nothing about Google Workspace or Microsoft 365 inboxes, which is where most B2B recruiting outreach lands. Low volume domains often show no data at all, and dashboards lag by about a day.
Overview
Postmaster Tools is a free Google service for monitoring the email you send to personal Gmail accounts. You add the domain you use for SPF or DKIM, verify ownership with a TXT or CNAME record, and the dashboards start filling once Gmail sees enough of your mail.
The dashboards cover compliance status, spam rate, IP reputation, domain reputation, feedback loop, authentication, encryption and delivery errors. You can view the last 7, 30, 60, 90 or 120 days, and add subdomains separately to see them on their own.
The compliance status dashboard is the most useful for outbound teams. It checks you against Gmail's sender guidelines, including SPF and DKIM, DNS records, message formatting, encryption and spam rate, plus DMARC and one-click unsubscribe for bulk senders who send about 5,000 or more messages a day to Gmail.
For recruiters, it matters mainly when your candidate outreach goes to Gmail addresses. Business outreach to company domains is not covered, so pair it with a seed test or warm-up tool if your lists are mostly corporate inboxes.
Who it's for
Best for
- Any sender emailing personal Gmail addresses
- Agencies checking Gmail compliance before scaling a domain
- Recruiters sending to candidates on Gmail accounts
- Teams that want the official spam rate number for free
Not ideal for
- Low volume senders whose dashboards stay empty
- B2B outreach aimed mainly at company inboxes on Workspace or Microsoft 365
- Anyone needing real-time alerts or inbox placement tests
Key features
Spam rate dashboard. Shows the percentage of your mail that Gmail users manually mark as spam, the number Gmail's bulk sender rules are measured against.
Compliance status. Marks each Gmail sender requirement as Compliant, Needs work or No data found, covering SPF, DKIM, DNS, encryption, spam rate and, for bulk senders, DMARC and one-click unsubscribe.
Deliverability analysis. Gives a recommendation on your domain's standing with Gmail when you send too little, fail delivery, exceed the spam threshold or show low engagement.
Authentication and encryption. Reports the share of your mail passing SPF, DKIM and DMARC and the share sent over TLS.
Delivery errors. Shows the percentage of authenticated messages Gmail rejected or temporarily deferred.
Shared access. Domain owners can add teammates with a Google account to view the same dashboards.
Pricing
Google Postmaster Tools is free. You need a Google Account or Google Workspace account and must verify each sending domain with a TXT or CNAME record before dashboards show data. There are no paid plans. Confirm current terms on the vendor site.
Checked 4 Nov 2026. Vendors change prices without notice.
See current pricing on Google Postmaster Tools (opens in a new tab)
Is Google Postmaster Tools expensive?
Google Postmaster Tools starts at Free. We list 53 deliverability tools in total. 10 have a free tier, and those with a public price typically start around $29 a month.
- 5 quote-based
- 10 free tier
- 50 public price
Worked out automatically from every deliverability listing, so it updates as the directory changes.
Pros and cons
Pros
- Free and run by Google
- Shows the official Gmail spam rate
- Compliance checklist for sender rules
Cons
- Personal Gmail addresses only
- Empty dashboards at low volume
- Data lags around 24 hours
What's new at Google Postmaster Tools
No updates logged yet. Follow Google Postmaster Tools and we will email you when it announces something new or its starting price changes.
Follow Google Postmaster Tools
Get an email when Google Postmaster Tools ships a new feature, posts release notes or changes its starting price. Only when something changes, and you can stop in one click.
How Google Postmaster Tools compares
See all Google Postmaster Tools alternatives, with what each one does differently and a head to head for every pairing.
| Tool | Free tier | From | MCP | API | Compare |
|---|---|---|---|---|---|
| | ✓ | Free | – | ✓ | |
| | – | $20/mo | – | – | Compare |
| | ✓ | $79/mo | – | – | Compare |
| | – | $29/mo | ✓ | ✓ | Compare |
$20/mo
MailReach runs seed spam tests and warm-up, giving placement data across providers beyond Gmail.
$79/mo Free tier
Folderly is a paid deliverability platform that covers Outlook and Workspace inboxes as well as Gmail.
$29/mo MCP API
WarmySender adds mailbox warm-up to raise reputation, which Postmaster Tools only reports on.
Your next step
Shortlisting Google Postmaster Tools?
Still deciding? Ask an AI assistant about Google Postmaster Tools.
ChatGPT (opens in a new tab)Claude (opens in a new tab)Grok (opens in a new tab)
Frequently asked questions
What is Google Postmaster Tools?
Is Google Postmaster Tools free?
Does Google Postmaster Tools have an MCP server or API?
What are alternatives to Google Postmaster Tools?
Is Google Postmaster Tools your product? Add the Listed on Work Insiders badge
Put this on your site so buyers can read an independent write up. It links to this page.
More about the badge: workinsiders.com/badge. Something wrong in this listing? Tell us.