Gmail Postmaster Tools v1 Is Retiring: What You Need to Know

What’s actually changing?

The good news is that most of the dashboards you rely on today will still be available in v2. But there are a couple of exceptions:

• The Domain Reputation and IP Reputation dashboards are going away completely. If you rely on those to track how Gmail views your sending, you’ll need to look at alternative data sources.
  
• The API is being rebuilt. Google says a new v2 API will launch by the end of 2025. When it does, the current v1 API will stop working.
• Until API v2 is released, the current API will return data from the Google Postmaster Tools v2 dashboard.

Why is Google doing this?

It’s easy to see this as just another “Google cleanup,” but there’s more behind it. Postmaster Tools v2 is designed to be more modern and flexible.

• Some dashboards (like IP reputation) overlap with other signals and can be confusing for senders.
  
• The new API should make life easier for developers, with batch queries and compliance insights that weren’t available before.
  
• For the rest of us, the v2 interface should be more stable and future-proof.
  

In other words, Google is providing more useful and comprehensive tools.

What does this mean for deliverability?

The biggest shift is losing Gmail’s Domain and IP reputation dashboards. For years, they’ve been a quick way to check whether Gmail trusts your mail. Without them, senders will need to lean more on other data points:

• Compliance Status
• Spam Rate
• Feedback Loop
• Authentication results (SPF, DKIM, DMARC).
• Encryption
• Delivery Errors

The upcoming v2 API may actually give us better long-term visibility, especially around compliance. But there will be an adjustment period.

Final thoughts

Google retiring Postmaster Tools v1 is a big change, but not one to panic about. The core data most senders rely on will still be there and there won’t be any more confusion/conflict between data in V1 and V2.

As of September 30th, it will no longer be possible for anyone to access the reputation of IPs and Domains from Google Postmaster Tools; any data presented as such would only be an evaluation.

The key is to be prepared. If you’re only using Google Postmaster Tools for a quick reputation check, the change won’t have much impact, you’ll just need to rely on other data points to evaluate your reputation.