Warmerly
A daily score from the last 7 days: 50% inbox rate, 20% no bounces, 15% replies, 15% delivery.
Warmerly
lemwarm
One-to-one · Health score
Health score
One row, in depth: what each tool does, the verified numbers, and who each suits.
Lemwarm details read from its pricing page, home page, blog and lemlist's help centre on 21 October 2026.
Warmerly
A daily score from the last 7 days: 50% inbox rate, 20% no bounces, 15% replies, 15% delivery.
lemwarm
A Warmup Score; its help centre weights DNS setup 40, spam rate 30, blacklists 20 and domain age 10, while its blog says 70% fixed factors and 30% inbox rate.
The short answer
Health score, in one look.
Warmerly gives each mailbox a daily health score from the last 7 days: 50% inbox rate, 20% no bounces, 15% replies and 15% delivery. Lemwarm gives a Warmup Score, and its own pages weight it two ways: DNS setup 40, spam rate 30, blacklists 20 and domain age 10 in its help centre, but 70% fixed factors and 30% inbox rate in its blog. Neither score says where your campaign mail will land. Last checked 21 October 2026.
lemwarm
A Warmup Score; its help centre weights DNS setup 40, spam rate 30, blacklists 20 and domain age 10, while its blog says 70% fixed factors and 30% inbox rate.
The picture
Drawn side by side.
How Warmerly does it
Warmerly, in detail.
A score from warmup mail over the last 7 days.
01
How the score is calculated
A weighted sum: 50% inbox rate, 20% for the share of sends that did not bounce, 15% reply rate and 15% for the share of sends that reached a finished state, rounded to a whole number from 0 to 100.
Warmerly product, checked 21 October 2026
02
One snapshot a day
Each snapshot reads the mailbox's warmup jobs from the previous seven days.
Warmerly product, checked 21 October 2026
03
It does not measure campaign mail
The score reads warmup mail between Warmerly pool mailboxes. It is not a measure of where your campaign emails land.
Warmerly product, checked 21 October 2026
04
The formula in full
Score is 50% inbox rate, plus 20% of the share of sends that did not bounce, plus 15% reply rate, plus 15% of processed over sent, multiplied by 100 and rounded.
Warmerly product, checked 21 October 2026
05
Only permanent failures count as bounces
Bounces are counted from permanent send failures. SMTP login failures and exhausted retries are not counted, because they say nothing about the recipient.
Warmerly product, checked 21 October 2026
06
No data is not a low score
A snapshot is written only when at least one send has an observed result. Without that rule a brand-new mailbox would score 20 and pause itself over nothing.
Warmerly product, checked 21 October 2026
07
Silence is flagged
If a mailbox has 10 or more processed jobs and none classified, an alert says delivery cannot be observed, with a seven-day cooldown, instead of showing a stale number as current.
Warmerly product, checked 21 October 2026
08
Stale scores are not alerted on
A snapshot older than three days is ignored for score alerts, and the mailbox view dates an old score instead of presenting it as today's.
Warmerly product, checked 21 October 2026
09
What the score changes
A score under 70 trims the day's warmup quota to 75% and under 50 to 40%. A score under 60 for two days pauses the mailbox, which resumes automatically after a three-day cooldown.
Warmerly product, checked 21 October 2026
10
Placement is kept out
A placement test never writes to the score when it ran against our own pool mailboxes, since that would overwrite the day's real counts with a small sample.
Warmerly product, checked 21 October 2026
11
Reply rate is not campaign reply rate
The reply share in the score is warmup mail inside the network. It says nothing about replies from your prospects, which are measured on each campaign.
Warmerly product, checked 21 October 2026
How Lemwarm does it
Lemwarm, in detail.
A score with launch guidance, described two different ways.
01
Weights in the help centre
Email setup and DNS 40 points, warm-up spam rate 30, blacklists 20 and domain age 10.
help.lemlist.com/en/articles/14653207-how-to-set-up-and-use-lemwarm · read 21 October 2026
02
Weights in the blog
A Lemwarm blog post says the score is 70% fixed factors (domain age, SPF, DKIM, MX) and 30% inbox rate over the last 2 weeks.
lemwarm.com/blog/how-to-boost-your-email-deliverability · read 21 October 2026
03
Bands for action
Below 65, send no campaigns and pause lemwarm. From 65 to 90, warm up only. At 90 or above, with 14 days of stabilisation and an inbox rate above 90%, campaigns can begin.
help.lemlist.com/en/articles/14653207-how-to-set-up-and-use-lemwarm · read 21 October 2026
04
Not a placement percentage
The help centre says a score of 80 is not an 80% inbox rate and that the score 'does not predict whether your campaign emails will land in the inbox'.
help.lemlist.com/en/articles/8178526-discovering-lemwarm-plans · read 21 October 2026
05
Colours and what they mean
Red, below 65, means do not launch, and is usually a DNS or configuration issue or a blacklist hit. Orange, 65 to 90, means warming up, so you can send but keep volume low. Green, 90 and above, means ready.
help.lemlist.com/en/articles/14653207-how-to-set-up-and-use-lemwarm · read 21 October 2026
06
Launch needs two conditions
Green alone is not enough. The help centre adds 14 days of stabilisation with an inbox rate above 90% before campaigns, and the blog says not to launch on the calendar alone.
help.lemlist.com/en/articles/8178526-discovering-lemwarm-plans · read 21 October 2026
07
The previous name
The help centre says the score used to be called the Deliverability Score and now measures warm-up quality.
help.lemlist.com/en/articles/8178526-discovering-lemwarm-plans · read 21 October 2026
08
Targets
Both the blog and the setup article give a score over 90 and a spam rate of 1 to 2% at most before launch, and say a score that sits between 80 and 90 after reaching 40 a day probably means a domain issue.
lemwarm.com/blog/how-to-boost-your-email-deliverability · read 21 October 2026
09
After launch
The help centre says a score below 80 once campaigns are live points to a reputation problem, and below 65 means pause and investigate.
help.lemlist.com/en/articles/8178526-discovering-lemwarm-plans · read 21 October 2026
10
Where to see it
The Warm up tab shows each inbox, its limits and its Warmup Score, and lemlist shows the score on hover for a quick view.
help.lemlist.com/en/articles/14653207-how-to-set-up-and-use-lemwarm · read 21 October 2026
What Lemwarm does not say
We looked, and found no statement on these. That is about its published pages only, not about the product.
- How the inbox rate is measured
- How lemwarm measures the inbox rate that feeds the score
- Why the help centre and the blog weight the score differently
Where the sources disagree
We report each version rather than pick one.
- Score weights: lemlist's help centre says 40, 30, 20 and 10 points for setup, spam rate, blacklists and age. Lemwarm's blog says 70% fixed factors and 30% inbox rate over 2 weeks.
The numbers
Only what we could verify.
| Measure | Warmerly | lemwarm |
|---|---|---|
| Health score | A daily score from the last 7 days: 50% inbox rate, 20% no bounces, 15% replies, 15% delivery. | A Warmup Score; its help centre weights DNS setup 40, spam rate 30, blacklists 20 and domain age 10, while its blog says 70% fixed factors and 30% inbox rate. |
| Inbox rate weight | 50% | 30% per its blog |
| Score window | Last 7 days | Last 2 weeks per its blog |
| Launch threshold | No fixed threshold | 90 or above |
| Bounce weight | 20% | Not a separate weight |
| Reply weight | 15% | Not stated |
| Delivery weight | 15% | Not stated |
| DNS and setup weight | Not a score input | 40 points in the help centre, part of 70% fixed factors in the blog |
| Blacklist weight | Not a score input | 20 points in the help centre |
| Spam weight | Not a separate weight | 30 points in the help centre |
| Action when low | Under 60 for 2 days pauses | Under 65 means do not launch |
| Stale score ignored after | 3 days | Not stated |
In practice
What it means for you.
Our reading of the facts above. Not a promise, and not the only reasonable reading.
Use a score as a prompt
A score tells you to look, not what to send. Both vendors say it does not predict campaign placement.
Different weights, different scores
The same mailbox would not get the same number from both tools.
The same mailbox, two scores
A mailbox with perfect DNS but few warm-up replies would lose points on Warmerly, where DNS is not in the score, and on Lemwarm would keep the 40 DNS points. Neither number is wrong, and they measure different things.
What to do under 60
On Warmerly a mailbox under 60 for two days is paused and resumes after a cooldown. Lemwarm tells you to pause below 65 and investigate. In both cases the next step is the same: look at DNS, spam placement and your list first.
A score is not a promise
Both vendors say it does not predict where campaign mail lands. Use it to decide whether to look closer, then test placement before a large send.
Arithmetic on Warmerly's weights
A mailbox with 90% inbox rate, no bounces, a 40% reply rate and everything processed scores 0.5 x 90 + 0.2 x 100 + 0.15 x 40 + 0.15 x 100 = 86. The inbox rate carries most of the weight, so a few spam results move the number more than a quiet week of replies.
Who it suits
Pick the one that fits.
Warmerly
Warmerly is the better fit if
- You want the weights published in one place
- You want a score that can pause a poor mailbox automatically
- You want the weights and the actions they trigger written down
- You want a score that does not claim to be a placement result
- You want a stale or silent score to be flagged instead of shown as current
lemwarm
Lemwarm is the better fit if
- You want clear action bands, with a stated launch threshold
- You want the DNS and blacklist factors in the score
- You want colour bands with a stated launch rule
- You want DNS and blacklists inside the score
- You want a score tied to one dashboard in lemlist
Questions
What goes into the Lemwarm score?
Its help centre says DNS setup 40, spam rate 30, blacklists 20 and domain age 10. Its blog says 70% fixed factors and 30% inbox rate. The two do not match.
What goes into Warmerly's score?
50% inbox rate, 20% no bounces, 15% replies and 15% delivery, over the last 7 days of warmup mail.
Does a high Warmerly score mean I will land in the inbox?
No. It reads warmup mail between Warmerly mailboxes over the last seven days. It is a prompt to look, not a prediction for your campaign mail.
Does DNS count in Warmerly's score?
Not directly. DNS checks run separately and raise alerts and fix notes, while the score is built from warmup results.
Why does Lemwarm's score have two explanations?
Its help centre gives DNS 40, spam rate 30, blacklists 20 and domain age 10, while its blog says 70% fixed factors and 30% inbox rate over two weeks. We quote both and do not know which is current.
Sources
- lemlist help: how to set up and use lemwarm
- Lemwarm blog: how lemwarm works
- lemlist help: discovering lemwarm plans
Lemwarm pages were read on 21 October 2026. Plans and wording change, so check the vendor's own page before you decide. Warmerly details come from the product as it runs today.
More features
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