Understanding Warmup Health Scores
Every mailbox in WarmySender receives a Health Score from 0 to 100 that reflects its current sender reputation based on warmup performance.
How the Score Is Calculated
Your health score is computed from three key metrics measured over a rolling 7-day window:
• Inbox Rate — The percentage of warmup emails that land in the recipient's inbox (not spam). Higher is better.
• Spam Rate — The percentage of warmup emails that end up in spam or junk folders. Lower is better.
• Bounce Rate — The percentage of warmup emails that fail to deliver. Lower is better.
The score penalizes bounces most heavily (they have the greatest negative impact), followed by spam placement, then low inbox rates.
Score Ranges
• Excellent (80-100) — Your mailbox has a strong reputation. Safe to run campaigns at full volume.
• Good (60-79) — Solid reputation with room for improvement. Campaigns can run, but monitor closely.
• Fair (40-59) — Reputation needs attention. Consider reducing campaign volume and letting warmup strengthen your score.
• Critical (below 40) — Significant reputation issues detected. The system may auto-switch your mailbox to Recovery mode to protect your domain.
What Affects Your Score
• Emails landing in spam folders lower your score.
• Bounced or undeliverable emails reduce your score.
• Successful inbox placements and positive engagement (opens, replies) improve your score.
How the System Uses Scores
• Mailboxes with low scores are automatically excluded from the warmup peer pool to protect other users.
• If your score drops sharply, the system may trigger Recovery mode, which reduces volume and focuses on rebuilding reputation.
• Once your score recovers, normal warmup volume resumes automatically.
Tips for a Healthy Score
• Keep your score above 70 before starting any email campaigns.
• Verify your DNS records (SPF, DKIM, DMARC) are correctly configured.
• Monitor your bounce rate — a sudden spike often indicates a DNS or server issue.
• Let warmup run consistently for 2-3 weeks before judging results.
• If your score drops, check your mailbox connection and DNS settings before taking other action.