Quick answer. If you are in Postmaster Tools v2, IP Reputation is not showing because the dashboard is not part of v2 — Google has said the Domain and IP Reputation dashboards will be retired. If you are still in the legacy interface and the chart is blank, the usual causes are low mail volume to Gmail, unauthenticated traffic, a domain scope mismatch or reporting delay. Either way, per-IP visibility now comes from an independent monitor.
First: which Postmaster Tools are you looking at?
Since 2024 there have been two interfaces. You are in v2 if you see a Compliance status dashboard, a redesigned navigation and dashboards named Spam rate, Feedback loop, Authentication, Encryption and Delivery errors — and no Domain Reputation or IP Reputation entries. You are in the legacy interface if the dashboard list still includes Domain reputation and IP reputation with the Bad / Low / Medium / High ratings.
Google has stated that no action is required from senders and that accounts are redirected to v2 automatically. It also announced it was postponing the deprecation of the legacy web interface after sender feedback, so the exact timing has moved. In practice, treat v2 as the baseline: it is the interface Google is developing, and it is the one the v2 API reflects.
In Postmaster Tools v2 the dashboard is not missing — it is not included
This is the part that surprises people who search for "Postmaster IP reputation not showing" expecting a configuration fix. There is nothing to configure. Google's help center says the old dashboards are available in v2 with the exception of the Domain and IP Reputation dashboards, which will be retired, and that the v2 API includes all v1 functionality except Domain and IP reputation.
Google's stated reasons are worth reading in full, because they explain what the dashboard was and was not good at:
- Reputation data was not easily actionable for most senders — a "Low" label did not tell you what to change.
- Changes in sending behavior were slow to appear in the dashboard.
- The label could be misleading, because reputation is only one of many factors that affect deliverability.
None of those reasons mean IP reputation stopped mattering. Gmail's SMTP error reference still lists temporary rate limits and rejections tied to the reputation of the sending IP address, and Google's sender guidelines still ask senders to keep IPs off blocklists and to remember that everyone on a shared IP affects everyone else's reputation. What changed is that Google no longer publishes its per-IP view.
In the legacy interface: why the IP Reputation chart is empty
If you can still open the legacy dashboards and IP Reputation shows nothing — or shows data for some days only — the causes are usually one of the following. Check them in order.
1. Not enough mail to Gmail
Postmaster Tools only displays data for domains and IPs that send a sufficient volume of mail to Gmail users. Low-volume senders — small transactional streams, new IPs during warm-up, a server that only relays a few hundred messages a day to Gmail — often see empty charts or gaps. The threshold is not published; the practical rule is that the more consistent your Gmail volume, the more complete the chart.
2. Mail is not authenticated, or not attributed to the domain you are viewing
Postmaster data is attributed to a domain through DKIM signing and SPF authentication. If the mail from an IP is not authenticated, or is signed with a different domain than the one you added to Postmaster Tools, the IP's traffic will not appear under that domain.
3. Domain scope mismatch
Postmaster Tools reports by the domain you added and, in general, aggregates its subdomains. If the mail is signed as mail.example.com and you are looking at a differently scoped entry — or you added a subdomain that the mail does not actually use — the picture can look incomplete. Verify the exact domain that appears in the DKIM signature of the mail leaving the IP.
4. Reporting delay
Postmaster Tools data is not real time. The most recent day is often incomplete or absent until Google processes it. If only the last one or two days are missing, wait before troubleshooting.
5. Very poor reputation
Deliverability practitioners have long observed that when an IP's reputation is very poor and Gmail is rejecting or heavily filtering the traffic, the chart can be sparse simply because there is less accepted mail to report on. If an IP that used to show data suddenly goes blank at the same time your logs show 421 4.7.0 or 550 5.7.1 responses citing the sending IP's reputation, look at the IP, not at the dashboard.
6. The IP is used by a shared provider
If you send through an email service provider on shared IPs, the per-IP chart reflects the aggregate behavior of everyone on that IP. Your own sending may be fine while the chart is not, or vice versa.
What to watch in Postmaster Tools v2 instead
Postmaster Tools v2 still gives you signals worth checking regularly, even though none of them is per-IP:
- Compliance status — whether you meet Google's email sender guidelines (authentication, spam-rate thresholds, one-click unsubscribe, DNS requirements).
- Spam rate — the share of delivered mail that Gmail users manually mark as spam.
- Feedback loop — campaign-level complaint identification when you use the Feedback-ID header.
- Authentication — the percentage of mail passing SPF, DKIM and DMARC.
- Encryption — the share of traffic sent over TLS.
- Delivery errors — the percentage of authenticated mail that was rejected or temporarily failed, with error categories.
Delivery errors is the closest thing to a reputation symptom in v2: a rising temporary-failure rate often precedes a hard problem. But it is domain-wide. It will not tell you which of your twelve marketing IPs is the one being throttled.
How to see per-IP reputation again
That is the gap IP Reputation Monitor covers. Every sending IP you configure is checked automatically once a day and scored 0–100 with the independent Innova Reputation Score. Scores from 80 to 100 are Good, 70–79 Warning, below 70 Critical; No Data marks a day with no measurement and Technical Alert marks a check that could not be completed properly. Results are stored, so the history shows the day a score started to move, and SMTP groups tell you whether a problem is confined to one server or spreading across a pool.
| Date | SMTP-01 (8) | SMTP-02 (12) | SMTP-03 (6) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Good | Warn | Crit | No Data | Good | Warn | Crit | No Data | Good | Warn | Crit | No Data | |
| Sep 17 | 8 | 0 | 0 | 0 | 8 | 2 | 2 | 0 | 4 | 1 | 0 | 1 |
| Sep 16 | 8 | 0 | 0 | 0 | 8 | 3 | 1 | 0 | 4 | 1 | 0 | 1 |
| Sep 15 | 8 | 0 | 0 | 0 | 9 | 2 | 1 | 0 | 5 | 0 | 0 | 1 |
| Sep 14 | 8 | 0 | 0 | 0 | 10 | 1 | 1 | 0 | 5 | 0 | 0 | 1 |
| Sep 13 | 8 | 0 | 0 | 0 | 10 | 2 | 0 | 0 | 5 | 1 | 0 | 0 |
| Sep 12 | 8 | 0 | 0 | 0 | 11 | 1 | 0 | 0 | 6 | 0 | 0 | 0 |
| Sep 11 | 8 | 0 | 0 | 0 | 12 | 0 | 0 | 0 | 6 | 0 | 0 | 0 |
| Total | 56 | 0 | 0 | 0 | 68 | 11 | 5 | 0 | 35 | 3 | 0 | 4 |
It is not Gmail's private reputation and it does not claim to be. It is a consistent, independent, daily reading for every IP you operate — the operational signal the old dashboard hinted at, without depending on one provider's product roadmap.
Try it on your own IPs. The free trial monitors up to 5 IP addresses for 7 days with daily checks, the reputation dashboard, SMTP grouping and 7-day history. Start the free trial or compare plans.