Is your cold email domain burning?
A burning domain quietly tanks your campaigns before you notice: replies dry up, more mail lands in spam, and by the time you spot it, weeks of outreach are wasted. Here's how to catch it early — and how Cocolytics fixes it without you lifting a finger.
What a "burned" domain actually is
A domain is "burned" when mailbox providers stop trusting it. Instead of the inbox, your mail starts hitting spam or getting rejected outright. It usually builds up gradually: a few spam complaints, a rising bounce rate, a bad list, or sending too much too fast, until the domain's reputation crosses a line and deliverability collapses.
The early warning signs
Burning shows up in the data before it shows up in your results. The signals to watch:
- Bounce and spam rates climbing across a domain's mailboxes.
- Reply rate dropping even though volume and copy haven't changed.
- Provider-specific drops — e.g. fine at Google, tanking at Microsoft.
- A falling health score on individual mailboxes and the domain overall.
How Cocolytics catches it early
Cocolytics monitors every mailbox and domain continuously and scores their health in real time. It detects spam-and-bounce patterns across all your mailboxes at once — the cross-cutting signal a single-mailbox view misses — and flags a problem in under a minute, before it spreads to the rest of your infrastructure.
See it broken down by receiving provider in ESP reply-rate analytics, and check where mail is landing with inbox placement tests.
Fixing it automatically: pause, re-warm, swap
Detection is only half the job. When Cocolytics sees a domain burning, it pauses sending and starts an automatic re-warming sequence — no manual trigger. And for domains that are too far gone, burned domain swaps replace them with fresh inventory automatically, so your campaigns keep sending instead of stalling while you scramble for replacements.
FAQ
How do I know if my domain is already burned?
Watch the trend, not a single day: a steady climb in bounce/spam rate plus a falling reply rate on a domain is the tell. Cocolytics scores this for you and alerts when a domain crosses the line.
Can a burned domain recover?
Sometimes, with a careful re-warming period and reduced volume — which Cocolytics runs automatically. Domains that are too far gone are better swapped for fresh inventory.
Does swapping a domain lose my data?
No. Your analytics history stays in Cocolytics; the swap replaces the sending domain/mailboxes so campaigns continue.