--- title: "How to Troubleshoot a Low Warm-up Score in FirstSales | FirstSales" description: "Diagnose a stuck or falling Warmup Score — authentication gaps, over-sending, and reputation damage — and get a mailbox back to Healthy." canonical: "https://firstsales.io/tutorial/warmup-troubleshooting/" --- [Home](/)/[Tutorials](/tutorial/)/How to Troubleshoot a Low Warm-up Score in FirstSales Email Warm-up # How to Troubleshoot a Low Warm-up Score in FirstSales Diagnose a stuck or falling Warmup Score — authentication gaps, over-sending, and reputation damage — and get a mailbox back to Healthy. 8 min read·Intermediate·6 steps 1. 1 ## Open the Warm Up tab and read the status Open the connector and go to the **Warm Up** tab. The health badge tells you where the mailbox stands: * **Healthy** — score 80+, warm and sending well. * **Warming** — ramping up ("Ramping up — Day N") or mid-score; normal for a new mailbox. * **Placement pending** — waiting on inbox-placement data before scoring. * **Issues** — score under 40; needs attention. * **Paused** / **Blocked** / **Disabled** — warm-up isn't progressing (see below). Most "problems" are just a mailbox still **Warming** — that's expected and only needs time. ![Open the Warm Up tab and read the status](/tutorials/warmup-03-warmup-toggle.webp) 2. 2 ## Fix: warm-up won't turn on If you can't enable warm-up, the mailbox is almost certainly **unverified**. The tab shows _"Verify this connector before enabling warmup."_ Finish connecting/verifying the mailbox first, then the **Email Warmup** toggle ("Gradually build sender reputation") becomes available. 3. 3 ## Fix: status says Blocked A **Blocked** badge shows a banner: _"Warmup blocked: {reason}"_ with "Sender reputation won't progress until this is resolved." Read the reason and clear it — common causes are an authentication/connection problem or a mailbox that needs reconnecting. Warm-up resumes once the block is gone. 4. 4 ## Fix: reconnect a mailbox that lost access If a Google or Microsoft mailbox's OAuth access lapsed, its card shows a **Reconnect account** action. Click it to re-authorize — this clears auth-related blocks and lets sending and warm-up continue. For OAuth errors during reconnect, use **Try again**. 5. 5 ## Fix: score stuck low (New / Needs Engagement) A new or low-scoring mailbox surfaces a hold sub-label that tells you exactly what it needs: * **New** — "Just added — start sending to build a health score." * **Warming Up** — "Keep sending — needs 20+ emails to get a health score." * **Needs Engagement** — "Improve open or reply rates to reach Healthy status." So a stuck score usually means _keep sending_ (volume) or _improve replies_ (engagement) — not a bug. Better targeting and copy lift engagement, which lifts the score. 6. 6 ## Read the Daily Breakdown for the real cause Scroll to the **Daily Breakdown** table for the day-by-day truth: **Sent, Delivered, Opened, Replied, Bounced, Spam,** and **Rescued** (auto-pulled out of spam). Also check **Daily Target** and **Days Active**. Rising bounced or spam counts point to list quality or authentication; flat "Days Active" with no sends points to a paused or blocked mailbox. Fix the specific signal the table exposes rather than toggling warm-up off and on. ## Pro tips Hard-won shortcuts that keep warm-up on track. 1 ### 'Warming' is not a problem A new mailbox reads Warming (or 'Ramping up — Day N') by design. Don't disable it or panic at a mid-range score — warm-up takes days to climb. Patience is the fix. 2 ### Unverified = can't warm up The single most common 'warm-up won't start' cause is an unverified connector. Verify the mailbox first; the toggle unlocks after that. 3 ### Reconnect clears auth blocks A Blocked mailbox is often just expired OAuth. Use Reconnect account on the connector card before assuming anything worse. 4 ### Low score? Send more, and get replies The hold labels spell it out: build volume past 20 emails, then improve open/reply rates. Engagement — not a setting — is what pushes a mailbox to Healthy. ## Frequently asked questions Why won't warm-up turn on? The connector is **unverified**. The Warm Up tab shows _'Verify this connector before enabling warmup.'_ Complete verification, then the **Email Warmup** toggle becomes available. My mailbox says 'Warming' — is something wrong? No. **Warming** (and 'Ramping up — Day N') is the normal state for a new or recovering mailbox. It climbs toward **Healthy** (score 80+) over several days of steady sending. What does a 'Blocked' status mean? Warm-up is halted: the banner reads _'Warmup blocked: {reason}'_ and reputation won't progress until you resolve that reason — often an authentication or connection issue. Fixing it (frequently via **Reconnect account**) resumes warm-up. How do I reconnect a mailbox? On the connector card, click **Reconnect account** (available for Google and Microsoft) and re-authorize. This clears auth-related blocks so sending and warm-up continue. Why is my warm-up score stuck low? Check the hold sub-label. **New**/**Warming Up** mean keep sending (a score needs 20+ emails); **Needs Engagement** means improve open and reply rates. A low score is usually a volume or engagement gap, not a fault. What is 'Placement pending'? The mailbox is waiting on inbox-placement data before it can be scored, so the gauge shows pending rather than a number. It resolves on its own as placement data comes in. Where can I see day-by-day warm-up activity? The **Daily Breakdown** table on the Warm Up tab shows Sent, Delivered, Opened, Replied, Bounced, Spam, and Rescued per day, alongside Daily Target and Days Active — the best place to spot a real deliverability problem. Should I disable and re-enable warm-up to fix issues? No — disabling warm-up pauses your sender-reputation progress (the app warns you of this). Instead, fix the specific signal: verify the mailbox, reconnect it, or improve engagement. Leave warm-up running. ## Ready to put this into practice? 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