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Understanding your mailbox reputation scores (Google Score & Microsoft Score)

Where to find the Google Score and Microsoft Score in your dashboard, what they measure, why new mailboxes read low, and what actually affects them.

Your dashboard shows a reputation score for each mailbox, so you can see at a glance how your sending is trending. This guide explains where to find these scores, what they mean, and — importantly — when not to read too much into them.

Where to find your scores

  • Open Email accounts. Each mailbox has a Google Score and a Microsoft Score column, plus a Last check of reputation date.

  • Click any mailbox to open its Deliverability panel, where the same Google Score and Microsoft Score are shown along with when they were last checked.

What the scores mean

The Google Score and Microsoft Score are our estimate of how the two biggest email ecosystems — Google/Gmail and Microsoft/Outlook — are currently treating that mailbox's sending. A High score is what you want. Because Google and Microsoft filter independently, it's completely normal for one to differ from the other for the same mailbox.

What affects your reputation

Three main factors move your mailbox reputation:

  • Sending schedule. Email providers watch for sudden spikes. Warming up properly and increasing volume gradually is essential — ramping up too fast is the quickest way to damage a mailbox's reputation.

  • Bounce rate. Sending to invalid addresses drives bounces up and reputation down. Keep your lists clean and verified.

  • Spam complaints. The more complaints you get, the worse your reputation becomes — so keep your targeting and content relevant.

For the recommended warmup and sending numbers, see What's the daily email limit per email account? and How warmup works and how to start it.

New mailboxes: don't judge the score too early

A brand-new mailbox hasn't built any sending history yet, so its score can read low — even "burned" — during roughly the first two weeks of warmup. This is expected and isn't a sign that something is wrong: as warmup builds the mailbox's health, the score rises on its own. Let each new mailbox complete its full warmup period before you read anything into its score.

If your score isn't High, or drops from High

As a rule of thumb: if a mailbox that's past its initial two-week warmup period shows anything less than a High score — or a previously-High score drops — pull back rather than push through. Pause new prospecting sends from that mailbox and let it run warmup-only (or a much lighter, mostly-warmup mix) for 1 to 3 weeks; scores typically recover on their own once volume backs off. Splitting your daily volume closer to 50% warmup / 50% outreach rather than mostly outreach also helps keep reputation stable going forward — see How warmup works and how to start it.

If scores — or reply rates — drop across many mailboxes at once, not just one

The guidance above is about a single mailbox's score reacting to its own sending. Separately, from time to time you may notice scores dip, or replies drop off, at the same time across a number of your mailboxes (sometimes across an entire account or agency's worth of clients), without any change in how you've been sending. This can happen while we're making changes on our infrastructure side that affect scoring or delivery systems more broadly — it isn't something you did, and it isn't a sign your mailboxes are damaged.

This applies whether what you're watching is the dashboard score itself or a downstream business metric like reply rate ("we went from 40 replies a day to 2-3 overnight, across every client"). A broad, simultaneous drop in either one, with no change on your end, points to the same kind of infrastructure-side reputation shift rather than a problem specific to your mailboxes or sending practices.

If you notice a broad, simultaneous dip like this: you don't need to change your sending behavior in response. Scores and reply volume in this situation typically settle back on their own over the following one to two weeks. If it's been longer than that, or you're seeing real rejections rather than just lower numbers, contact us with your account email (and, if relevant, which mailboxes/clients are affected and whether they're SMTP or Google Workspace) so we can take a look.

Dashboard score vs. third-party tools

Your dashboard score and an external inbox-placement or warmup tool measure different things in different ways, so they won't always agree — and a mismatch on its own usually isn't a cause for concern. See Why does a third-party tool show a high spam rate during warmup? A "burned" label in a sequencer is a related case — see My mailboxes show as "burned", "blacklisted", or low reputation — what it means.

If a score stays low after warmup

If a mailbox still shows a low score well after its warmup period — including after trying the pull-back above — or you're seeing real rejections from Google or Microsoft, that's worth a proper look — this is a genuine issue rather than a false alarm. Contact us with your account email and the affected mailboxes so we can review your specific case. See also My mailboxes show as "burned", "blacklisted", or low reputation.

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