A listing's health score is the average of its mailboxes' warming reputation scores. Each mailbox's score is its warmup reputation score, or, when that isn't available yet, a spam-rate measure (100 minus 2 times the spam percentage). The marketplace shows 80 and above in green (Excellent), 60-79 in yellow (Good) and under 60 in red. Use it alongside warming days, domain age and the blocklist check when picking domains.
How to read the score
The marketplace colours each score:
| Colour | Range | Label in the filter |
|---|---|---|
| Green | 80-100 | Excellent (80+) |
| Yellow | 60-79 | Good (60-79) |
| Red | under 60 | Fair (under 60) |
Rough guidance for choosing:
- 80 and above. Ready for normal cold email volumes from day one.
- 60-79. Usable, but ramp your cold volume up over the first week rather than starting at full volume.
- Under 60. Pick something else if you can. If you do use it, keep volumes low at first and consider turning warming on.
These are guidelines for reading the number, not tiers the system enforces.
Read it with the other columns
The score is one of several columns on the Pre-warmed page. Use them together:
- Warming. Days of warming so far. 30 days counts as fully warmed.
- Age. How long ago the domain was registered. Older domains generally carry better reputation. Domains 6 months or older are marked with a trophy.
- Sent, Replies, Spam. Total warmup emails sent, replies received, and emails the warming network moved out of spam.
- Blocklist. Click the shield for a live check. See Blocklist checks.
What the score doesn't tell you
- Fit for your audience. Recipient mail systems use their own signals. A great score doesn't override content or targeting problems.
- Future results. The score reflects warming history, not what happens after you start sending. Your own sending patterns decide that.
- List quality. Sending to a bad list will hurt any domain, whatever its score.
Use it as a filter, not an oracle
A sensible default: filter to Excellent (80+) and Clean Only on blocklists, sort by Warming or Age, then pick names you like.
What's next
Frequently asked questions
How is the score calculated?
Each mailbox gets its warmup reputation score. When that isn't available, Winnr falls back to 100 minus 2 times the mailbox's spam percentage during warming. The domain's score is the average across its mailboxes. Warming days, domain age, reply counts and blocklist status are shown separately and are not part of the score.
How often is it updated?
Once a day, while the domain is in inventory.
Where can I see each mailbox's score?
Click View on a listing. When you choose which addresses to keep, each one shows its own score.
Why do some listings have lower scores?
Warming history varies. A domain that started warming recently, or had a rougher start, can score lower than one that has warmed longer. Check the Warming column too. 30 days of warming counts as fully warmed.
Should I always buy the highest score?
No. Small differences, like 88 versus 92, don't mean much for real-world placement. Filter to Excellent (80+), then choose on warming days, domain age, TLD and the name itself.
What happens to the score after I buy?
Warming stops at handover, so the marketplace score is a snapshot of the domain's reputation at sale. From then on your own sending drives reputation. Clean lists and sensible volumes keep it high. If you turn warming on for the mailboxes (optional, $0.60/mailbox/month), you get ongoing warming metrics in the Warming page.