Short version. Google Postmaster Tools v2 carries over every previous dashboard except Domain Reputation and IP Reputation, which Google has said will be retired. If your team used the IP Reputation dashboard to keep an eye on individual sending addresses, the practical alternative is an independent monitor that checks every IP daily, keeps the history and flags deterioration — which is exactly what IP Reputation Monitor does.
What the old Postmaster IP Reputation dashboard gave you
The legacy Postmaster Tools IP Reputation dashboard rated each sending IP as Bad, Low, Medium or High, day by day, based on Gmail's own view of mail arriving from that address. It was Gmail-only, it lagged real behavior, and it was coarse — but it was per-IP, it was daily, and it was free. Many deliverability and infrastructure teams built a habit around it: open Postmaster Tools in the morning, glance at the IP chart, and investigate if anything moved.
That habit is what disappears with v2. Google's help center explains that reputation data was not easily actionable for most senders, that changes were slow to appear in the dashboard, and that a reputation label can be misleading because reputation is only one of many deliverability factors. Those are fair points about that dashboard. They do not change the fact that receiving systems — including Gmail — still evaluate the reputation of the sending IP on every connection.
Gmail's own SMTP error reference still includes responses citing "the very low reputation of the sending IP address" (for example 421 4.7.0 and 550 5.7.1).
Source: Google Workspace Admin Help, Gmail SMTP errors and codes
What an alternative has to do
A screenshot of a free lookup tool is not a replacement for a monitoring dashboard. To cover the job the old dashboard did — and to do it better in the places where it was weak — an alternative needs six things:
- Per-IP measurement. Sending problems are usually isolated to one address or one pool. Domain-level or account-level views hide that.
- A daily schedule. Reputation moves gradually. A check that runs only when somebody remembers cannot show the direction of travel.
- Stored history. The most useful question in an investigation is "when did this start?" You can only answer it if every result was kept.
- Grouping that mirrors your infrastructure. SMTP servers, customer pools, environments. Group totals tell you whether an issue is isolated or spreading.
- A clear classification. Good, Warning and Critical bands turn a number into an action.
- Independence. A measurement your team controls, that does not depend on a single mailbox provider's product decisions.
Postmaster Tools v1, Postmaster Tools v2 and IP Reputation Monitor
| Capability | Postmaster Tools (legacy) | Postmaster Tools v2 | IP Reputation Monitor |
|---|---|---|---|
| Per-IP reputation view | Yes (Bad / Low / Medium / High) | Not included — to be retired | Yes — 0–100 Innova Reputation Score per IP |
| Scope | Gmail only | Gmail only | Independent, provider-agnostic measurement |
| Check frequency | Daily (Gmail-observed traffic) | Daily aggregates for remaining dashboards | Daily scheduled check per IP |
| History | Chart window in the UI | Chart window for remaining dashboards | Stored per day; 7-day (trial), historical (Pulse), extended (Command), custom (Enterprise) |
| SMTP grouping | No | No | Yes — by server, customer, environment or pool |
| Critical IP detection | Manual reading of the chart | No per-IP view | Yes — Warning and Critical bands surfaced automatically |
| Reputation-change alerts | No | No | Yes — Command plan |
| CSV export | Via API (v1, being retired) | v2 API (no reputation data) | Yes — Command plan |
| Gmail user complaint rate | Spam rate dashboard | Spam rate dashboard | No — keep Postmaster Tools for this |
| Sender-guideline compliance | No | Compliance status dashboard | No — keep Postmaster Tools for this |
| Cost | Free | Free | Free 7-day trial; from $15/month |
The point of the table is not that one tool replaces the other. Postmaster Tools v2 remains the only source for how Gmail users react to your mail. IP Reputation Monitor covers the part v2 no longer does: the standing of each sending IP, every day, across your entire infrastructure — not just the part that reaches Gmail.
| SMTP Group | Purpose | Active IPs | Good | Warning | Critical | No Data |
|---|---|---|---|---|---|---|
| SMTP-01 | Transactional | 8 | 8 | 0 | 0 | 0 |
| SMTP-02 | Marketing | 12 | 8 | 2 | 2 | 0 |
| SMTP-03 | Customer dedicated | 6 | 4 | 1 | 0 | 1 |
| SMTP-04 | Notifications | 10 | 10 | 0 | 0 | 0 |
| SMTP-05 | Onboarding | 7 | 6 | 1 | 0 | 0 |
| SMTP-06 | Backup pool | 5 | 3 | 0 | 0 | 2 |
A practical monitoring stack after Postmaster Tools v2
Teams that relied on the IP Reputation dashboard usually end up with a small set of complementary sources. This is the combination we recommend:
- Postmaster Tools v2 for Gmail-specific feedback: Compliance status, Spam rate, Feedback loop, Authentication, Encryption and Delivery errors.
- IP Reputation Monitor for the per-IP, per-day view of your own sending infrastructure with Good / Warning / Critical status, history and trends.
- DMARC aggregate reports to confirm which sources are sending as your domain and whether SPF and DKIM align.
- Your own SMTP logs for the receiving-side responses that name a reputation or rate-limit problem (421 4.7.0, 421 4.7.28, 550 5.7.1 and similar).
- Periodic blocklist checks for listings that would explain sudden rejections, which Google's sender guidelines also ask senders to watch for shared IPs.
With those in place, the morning routine becomes: open the IP report, look at Warning and Critical, check whether the group total moved, then use Postmaster Tools v2 and your logs to understand the cause.
What an independent monitor does not do
To be clear about the boundaries:
- The Innova Reputation Score is not Gmail's internal reputation and does not reveal any mailbox provider's private score. It is an independent consolidated measurement built from multiple infrastructure and reputation signals.
- It does not guarantee inbox placement. Reputation is one of several signals receiving systems use.
- It does not replace authentication, list hygiene or complaint management. It tells you earlier that something is moving, so those investigations start sooner.
How to start
Create an account, verify your email address and mobile number, add the IPs you send from and organize them into SMTP groups. Daily checks begin with the next scheduled run. The free trial covers up to 5 IP addresses for 7 days; Pulse ($15/month) covers 15, Command ($35/month) covers 50 and adds trend reporting, CSV exports and reputation-change alerts. For 50 or more IPs, request an Enterprise plan.