Campaign Safety & Cooldown
WarmySender automatically protects your sender reputation with safety features:
Bounce Rate Protection:
- Default threshold: 5% bounce rate
- Minimum 50 sends before enforcement
- If exceeded, campaign enters 'Cooldown' status and stops sending
Spam Complaints — What We Can and Cannot See:
- We cannot see spam complaints on your campaigns, and it matters that you know rather than wait for a warning that will never arrive. Your campaigns send from your own connected mailbox, so when a recipient clicks 'Report spam' the report goes to THEIR mailbox provider — no copy of it reaches WarmySender. Nothing here counts complaints, and no campaign is paused because of them.
- Watch your complaint rate where it is actually reported: Google Postmaster Tools for Gmail, Microsoft SNDS for Outlook. Aim to stay under 0.1%.
- If you do learn that someone complained, add their address to your blocklist yourself so no future campaign reaches them.
Reply Rate Floor (optional):
- Set a minimum expected reply rate per campaign
- At 100 sends: warning logged if below the floor
- At 200 sends: campaign auto-paused if still below the floor
Cooldown & Recovery:
- When a campaign enters Cooldown, all sending stops
- A cooldown does NOT lift on its own — the campaign stays paused until you resume it. That is deliberate: the pause means something about the send needs attention, usually list quality, and quietly restarting into the same list would keep burning your sender reputation
- Fix the cause first (clean or re-verify your list), then open the campaign and click Resume
- Resuming starts a fresh safety baseline, so the campaign is judged on what it sends from that point on rather than on the bounces that paused it
Mailbox Auth Protection:
- After 10 consecutive authentication failures on a mailbox, it is automatically disabled to prevent further damage
Pausing on a Struggling Email Provider:
- If several sends in a row to the same email provider fail, we stop sending there for a few minutes rather than keep pushing
- After that, we try one test send — if it goes through, normal sending resumes; if it does not, we wait again
Watchdog System:
- An independent watchdog runs every 60 seconds
- If the campaign scheduler hasn't processed in 3 minutes, it's declared dead and force-restarted
Best Practices:
- Keep bounce rate below 3% by verifying email lists before sending
- Use the suppression list to exclude known bad addresses
- Monitor the Analytics page for early warning signs
- Don't ignore Cooldown — it will not clear itself. Investigate and fix the root cause, then click Resume.