Postmaster spam rate tracker: count the 7 days below 0.3% after a spike
In short: Reads one line per day (a date and the Postmaster Tools spam rate, as a percentage or a ratio), bands each day against Google's 0.1% target and 0.3% limit, and counts the consecutive days below 0.3% that bulk senders need before mitigation, with the date the count reaches 7. Missing days end a streak. Limit: It counts the rates you paste; it can't read Postmaster Tools for you or see days Google didn't report.
Copy the daily spam rates from Postmaster Tools, one date and rate per line, and press Check. The tool counts the consecutive days (UTC) below 0.3% ending on your latest day, tells you how many more you need to reach Google's 7 for mitigation eligibility and on which date, and marks every day under 0.1%, between, or at 0.3% or more.
Price: this tool is free. Checking a whole email list is from $9/mo, and the first 100 checks are free with Google, no card. See pricing
Sample result
6 consecutive days below 0.3%: one more reaches Google's 7 on 2 November.
- Days below 0.3%
- 6 of 7
- Latest
- 0.04%
- Peak
- 0.42% on 25 Oct
What this means for you
Bulk senders become eligible for mitigation after 7 days below 0.3%; keep sending only to engaged contacts.
- Consecutive UTC days below 0.3%
- Date the 7-day count completes
- Each day banded 0.1% / 0.3%
- Missing days flagged
- Postmaster Tools
- Spam rate
- Gmail
By SimpleVerifier Team · Last updated · Runs in your browser; nothing you paste is sent to us
How do I keep the list that caused the spike from doing it again?
- Stop mailing the list or segment that went out on the spike day.
- Upload it at /verify before it's ever mailed again. Dead and disposable addresses are removed; the first 100 email checks are free with a Google sign-in, no card.
- Bring it back only with permission: a re-permission email, or not at all.
How do I track my Gmail spam rate after a spike?
- Open Postmaster Tools, pick your domain and read the daily spam rate for the last two to four weeks.
- Type or paste one line per day: the date, then the rate, e.g.
2026-10-25, 0.42%. A CSV with date and rate columns works too. - If your numbers have no % sign, choose whether they are percentages (as the dashboard shows) or ratios (0.0042 = 0.42%).
- Press Check the 7-day streak and read the count. Run it again each day as new data arrives.
Example
- You enter
- Nine days of Postmaster Tools spam rates, 24 October to 1 November 2026, peaking at
0.42%on 25 October and0.31%the day after, then falling to0.04%. - You get
- 6 consecutive days below 0.3% (27 October to 1 November), so 1 more day reaches Google's 7 on 2026-11-02; 4 days in a row below 0.1%; 2 days at 0.3% or more and 2 between 0.1% and 0.3%.
- Limits
- Runs in your browser with no line cap.
What does Google's 7-day rule say?
Gmail's email sender guidelines ask senders to keep the user-reported spam rate in Postmaster Tools below 0.1% and never let it reach 0.3%. Its sender guidelines FAQ adds that bulk senders whose rate is 0.3% or more aren't eligible for mitigation, and become eligible again once it stays below 0.3% for 7 consecutive days.
Eligible means you can ask; it isn't a promise that delivery recovers on day 8. The rate is calculated daily, data usually arrives within 24 hours, and Google says that after a fix it can take up to 7 days to reach a compliant level.
Why does a missing day end the streak?
Postmaster Tools leaves out days with too little volume to report, to protect privacy. A day with no number can't be shown to be under 0.3%, so the tool doesn't count it as a good day: the streak counts consecutive calendar days that each have a value below 0.3%. The missing days are listed, so you can see whether a short streak is a data gap.
A falling rate isn't always good news either: if Gmail starts filtering you to spam, fewer messages reach the inbox to be reported, and the rate can look low. Read it alongside the Compliance status dashboard. More in Postmaster spam rate spike after a bad list.
Who uses this tool, and for what?
- Email marketers
- Check each morning whether the week after a bad send has reached Google's 7 days.
- Deliverability consultants
- Show a client the streak and the date it completes instead of a screenshot of a chart.
- SaaS senders
- Track product and marketing domains separately after one of them spiked.
What can’t this tool tell you?
- It counts the rates you paste; it can't read Postmaster Tools for you or see days Google didn't report.
- Reaching 7 days makes a bulk sender eligible for mitigation; it doesn't guarantee delivery recovers.
- Postmaster's rate only covers DKIM-authenticated mail to Gmail recipients; other providers measure their own way.
- It can't tell which addresses on your list will complain or bounce next.
Common questions
- Can I export spam rate data from Postmaster Tools?
- The dashboard shows it as a chart, so the simplest route is to read the daily values off it. The Postmaster Tools API also returns daily domain stats; paste those values with their dates, choosing ratio if they are 0.0042-style numbers.
- Is 0.2% a bad Gmail spam rate?
- It's above Google's 0.1% target, which already hurts inbox delivery for bulk senders, but below the 0.3% line that removes mitigation eligibility.
- Do the days need to be in order?
- No. Lines are sorted by date, and a date pasted twice keeps the last value.
- Is anything uploaded?
- No. It runs in your browser.
Sources
Authentication and capacity are half of deliverability.
The other half is who you send to. Every hard bounce counts against the domain and inboxes you are sending from, and nothing in DNS can tell you which addresses on your list are dead.
- Bulk verification with real SMTP mailbox checks
- Hard bounces removed before a send, not discovered after
- Catch-all, disposable and role detection on every row
Plans from $9 a month, cancel anytime, no contract. Sign in with Google and your first 100 email checks are free, no card. The free tools stay free either way.