Postmaster Tools FAQs
You can add either the DKIM (d=) domain or the SPF (Return-Path) domain.
If your DKIM and SPF domains are the same, Postmaster Tools will combine traffic that’s signed by either of SPF or DKIM (or both), when generating the dashboards. Keep this in mind when looking at your data.
If you add the domain-name, the data seen in the dashboards will include traffic aggregated over all sub-domains (if any) of that domain, plus any traffic corresponding to the exact domain-name match.
For example, say example.com authenticates mail with 2 other subdomains: a.example.com and b.example.com. Adding example.com will give you analytics for traffic authenticated by "a.example.com," "b.example.com," and "example.com."
Note that you can also independently add multiple sub-domains and view data about each of them separately.
Once you add and verify ownership of a domain name, you can add sub-domains of that domain and view data without having to verify each of them.
Yes, but the dashboards for that domain will be empty until you prove ownership.
Most of the Postmaster Tools dashboards will display data only when there is a sizable daily volume of email traffic (up to the order of hundreds) coming from your Authentication Domains and/or certain other conditions, in place to prevent abuse. Also, make sure you're following Gmail's best practices.
In addition, some of the dashboards, like Spam Rate and Feedback Loop, need your traffic to be signed by DKIM in order to show any data.
Yes, each account needs its own DNS verification record at this time.
Yes, we make a best effort to exclude forwarded mail.
We cap the number of IPs shown in the tables to 500 Ip-ranges per reputation group. While this covers the majority of the sending IPs for most senders, sometimes it might not.
Due to mail forwarding, the IP reputation dashboard in rare cases might display IPs from which you have not sent any mail. For the most part, all forwarded mail is already filtered out when computing the data.
The last 30, 60, 90, and 120 day options will all start showing relevant data based on how long it’s been since you verified your domain.
This just means that the number is low enough to be almost negligible, and has been rounded down to zero. The value is included because the triggering reason (seen in the table), might still be of interest to the sender.
Postmaster Tools uses Coordinated Universal Time (UTC).
You can use common accessibility options with Postmaster Tools, including screen readers and keyboard navigation.
Screen readers & browsers you can use
- Windows: NVDA with FireFox
- Mac: VoiceOver with Chrome
- Chromebooks: ChromeVox with Chrome
Michelle is a Gmail expert and the author of this help page. Leave her feedback about this help page.