Google Postmaster Tools

Google Postmaster Tools is Google's own platform for monitoring how Gmail treats your emails. Connecting it to Celeric lets you see Gmail-specific reputation and traffic data alongside your other deliverability checks.

Available on Pro, Business, and Agency plans.

---

What you get

Once connected, Celeric can pull the following data from Google for your domain:

• Spam rate — percentage of your emails Gmail users marked as spam
• Domain reputation — Google's internal reputation rating (High, Medium, Low, Bad)
• IP reputation — reputation of the sending IPs associated with your domain
• Delivery errors — breakdown of delivery failures and their causes
• Feedback loop — Gmail complaint rate trends

This data comes directly from Google and reflects how Gmail sees your sending domain — not just whether your DNS records are configured correctly.

---

Connecting Google Postmaster Tools

Before you start: Your domain must already be verified in Google Postmaster Tools. If you haven't done that yet, go to postmaster.google.com, add your domain, and follow Google's verification steps (adding a DNS TXT record).

To connect in Celeric:

1. Go to Dashboard → Domains and click View Report on the domain you want to connect

2. At the top of the domain detail page, click Connect Google Postmaster

3. You'll be redirected to Google's OAuth consent screen

4. Sign in with the Google account that has access to Postmaster Tools for this domain

5. Grant the requested permissions

6. You'll be redirected back to Celeric — the button will change to a Google Postmaster connected badge

---

Data availability

Google only shows Postmaster data when your domain sends enough volume to Gmail. There is no exact threshold, but Google generally requires hundreds of messages per day to a significant number of unique Gmail recipients before metrics appear.

If you connect successfully but see no data, your sending volume to Gmail may be too low. This is normal for new domains or low-volume senders.

---

Disconnecting

To disconnect Google Postmaster Tools from a domain, you can revoke Celeric's access from your Google Account:

1. Go to myaccount.google.com/permissions

2. Find Celeric in the list of apps with access

3. Click Remove Access

The connection badge on your domain detail page will update the next time data is fetched.