Warmerly
A placement test per mailbox; accuracy is limited, as there is no dedicated Gmail or Outlook seed list yet.
Warmerly
Mailwarm
One-to-one · Placement test
Placement test
One row, in depth: what each tool does, the verified numbers, and who each suits.
Mailwarm details read from its pricing page, home page, features page, SMTP warmup page and about page on 21 October 2026.
Warmerly
A placement test per mailbox; accuracy is limited, as there is no dedicated Gmail or Outlook seed list yet.
Mailwarm
Continuous inbox placement tests and spam score monitoring, as it states; no method is described.
The short answer
Placement test, in one look.
Warmerly runs a placement test per mailbox, and its accuracy is limited because it has no dedicated Gmail or Outlook seed list yet. Mailwarm says it runs continuous inbox placement tests around the clock and monitors spam score. On what each publishes, Mailwarm is ahead here. Last checked 22 October 2026.
MailwarmMailwarm ahead on this row
Continuous inbox placement tests and spam score monitoring, as it states; no method is described.
The picture
Drawn side by side.
How placement is tested
What each says it checks
WarmerlyMailwarm
WarmerlyOne test, on demand or daily
- Inboxchecked
- Promotionschecked
- Spamchecked
- Junkchecked
MailwarmContinuous, as stated
- Spam scorelisted
- Placement tests24/7, as stated
Warmerly labels a test Limited accuracy when it ran against its own mailboxes. Mailwarm's pages describe no method or sample size.
On screen
What it looks like.
WarmerlySample data
How Warmerly does it
Warmerly, in detail.
A real test with a score per target, held back by where its targets are.
01
What a test does
It sends one message to up to 4 targets, waits 30 seconds on demand or 90 in the daily sweep, checks Inbox, Promotions, Spam and Junk over IMAP and scores each result.
Warmerly product, checked 21 October 2026
02
No dedicated seed list yet
Real measurement needs seed mailboxes at Gmail, Outlook or Yahoo. The doc's check on 2026-10-15 found none in production, so every test falls back to Warmerly's own mailboxes.
Warmerly product, checked 21 October 2026
03
Limited accuracy is shown
A fallback test scores close to 100 whatever the sender's real result, so the app labels it Limited accuracy and never uses it to change health.
Warmerly product, checked 21 October 2026
04
Allowances
Free has 3 placement tests a month, Starter 5, Growth 25 and Agency 100.
Warmerly product, checked 21 October 2026
05
Where to run one
Accounts, open the mailbox, then the Health tab and the Inbox placement card, then Run new test. You can leave the page while it runs and the result is saved either way. Warmi can run one too, after asking for a yes.
Warmerly product, checked 21 October 2026
06
How a result is scored
Each target scores 100 for inbox, 60 for promotions, 10 for spam and 0 if the message is missing, and the test shows the average with one dot per target mailbox.
Warmerly product, checked 21 October 2026
07
What a test costs
Each test you start uses one monthly placement test, which resets on the 1st. A test that fails to run is handed back. Warmerly's own background tests do not use your allowance. You can buy extra with credits, and nothing is bought without a button that states the price.
Warmerly product, checked 21 October 2026
08
Daily sweep
A daily sweep tests up to 5 accounts a run and skips any account tested in the last 24 hours. A run left in the running state for over 20 minutes is marked failed.
Warmerly product, checked 21 October 2026
09
A limited test never changes health
A test that fell back to Warmerly's own mailboxes never writes the health score and is left out of the spam score. It also cannot raise a mailbox's sending quota, which closes a loop where an inflated score would raise volume.
Warmerly product, checked 21 October 2026
10
Seeds from the network exist but are switched off
The code can use consenting mailboxes of other customers in the warmup network as real targets. It is off by default, and the doc dated 15 October 2026 says it had not been run against production, so we do not count it.
Warmerly product, checked 21 October 2026
11
Free checkers are separate
The domain health card checks SPF, DKIM, DMARC and blocklists on each mailbox, and the free tools check the same records for any domain with no account. Those checks are about setup, not placement.
Warmerly product, checked 21 October 2026
How Mailwarm does it
Mailwarm, in detail.
Continuous placement tests and spam score monitoring, as stated, with no method published.
01
Continuous tests
Its pricing and features pages describe inbox placement tests running 24/7, reported by mailbox and SMTP.
mailwarm.com/features · read 21 October 2026
02
Spam score
Spam score monitoring, inbox against spam placement. Its FAQ says scores are usually based on seed testing across different email providers.
mailwarm.com/pricing · read 21 October 2026
03
Real-time tracking
Provider-level monitoring is listed, with no method, sample size or frequency given.
mailwarm.com/features · read 21 October 2026
04
In every priced plan
Spam score monitoring is listed on Starter, Growth and Scale.
mailwarm.com/pricing · read 21 October 2026
05
A comparison to basic tools
It says most tools show activity, not real inbox or spam placement, and sets its own spam score and placement insights against that.
mailwarm.com/pricing · read 22 October 2026
06
Provider-level insights
Its features page lists provider-level monitoring for Gmail, Outlook, Microsoft 365 and Yahoo, early detection of issues and recommendations to improve placement.
mailwarm.com/features · read 22 October 2026
07
A dashboard with trends
It describes a deliverability dashboard with warmup progress, reputation tracking and inbox placement trends across providers. The panel on the page shows example figures.
mailwarm.com/features · read 22 October 2026
08
Infrastructure checks
Its features page lists SPF, DKIM and DMARC validation, blacklist detection across major databases, SMTP and IMAP configuration checks and a reverse DNS check, with guidance on fixing problems.
mailwarm.com/features · read 22 October 2026
09
Seed testing
Its FAQ says spam scores are usually based on seed testing across different email providers. It does not say whether that describes its own method.
mailwarm.com/pricing · read 22 October 2026
10
An audit from its experts
The free audit call covers your sending setup and gives the top 3 fixes. That is a person reading your results, not an automated test.
mailwarm.com/pricing · read 22 October 2026
What Mailwarm does not say
We looked, and found no statement on these. That is about its published pages only, not about the product.
- The test method, sample size and frequency
- Which providers are seeded
- Whether the dashboard figures are real
Where the sources disagree
We report each version rather than pick one.
- Its features page shows inbox rates of 91% on average, with Gmail at 94%, Outlook at 88% and Yahoo at 91%; the page does not say these are real results, so we do not use them.
The numbers
Only what we could verify.
| Measure | Warmerly | Mailwarm |
|---|---|---|
| Placement test | A placement test per mailbox; accuracy is limited, as there is no dedicated Gmail or Outlook seed list yet. | Continuous inbox placement tests and spam score monitoring, as it states; no method is described. |
| Placement tests | 5 a month on Starter | Continuous, as stated |
| Targets in one test | Up to 4 | Not stated |
| Dedicated seed list | None yet | Seed testing, as its FAQ puts it |
| Placement tests on Free | 3 a month | No free plan |
| Placement tests on Growth | 25 a month | Continuous, as stated |
| Test scoring | Inbox 100, promotions 60, spam 10, missing 0 | Not stated |
| Time per on-demand test | About a minute | Not stated |
| Providers named in monitoring | Gmail, Outlook, Yahoo and custom targets, when seeded | Gmail, Outlook, Microsoft 365, Yahoo |
In practice
What it means for you.
Our reading of the facts above. Not a promise, and not the only reasonable reading.
Treat both with care
Warmerly labels a fallback test Limited accuracy and never uses it to change health. Mailwarm's dashboard figures look like examples and its page does not say otherwise.
Read a Warmerly result by its label
A result marked Limited accuracy went to Warmerly's own mailboxes, which accept almost everything. It will look good whatever the truth is. Do not use it to decide that a domain is safe. A result without that label went to independent targets.
Do not rely on example dashboards
Mailwarm's pages show tidy figures such as inbox rates by provider. They look like examples, and the page does not say they are real results. Ask for a live account view or your own test before you treat any of them as a measure.
Run a test before and after a change
The useful way to use a test on either tool is a comparison: run one before you change DNS or content and one after. Warmerly only reports a trend between two tests of the same kind, because comparing a limited run to a real one measures which targets were available.
A test is not a guarantee
A placement test shows where one message landed on one day. Mailwarm's own about page says it promises no guaranteed placement, and we say the same of ours.
Match the check to the question
If you ask whether your records are right, use the domain health card or a free checker. If you ask where mail lands, use a placement test. If you ask why a domain keeps failing, a person reading the data, as on Mailwarm's plans, may help more than either.
Who it suits
Pick the one that fits.
Warmerly
Warmerly is the better fit if
- You want a clear label when a test is low in accuracy
- You want a test scored per target and clearly labelled when it is low in accuracy
- You want the allowance for tests stated on each plan
Mailwarm
Mailwarm is the better fit if
- You want placement monitoring running all the time, as stated
- You want spam score monitoring in every plan
- You want placement and spam score monitoring running continuously in every plan
- You want a person to read the results with you on a call
Questions
Does Mailwarm track inbox placement?
It says it runs inbox placement tests continuously and monitors spam score. It does not describe the method.
How does Warmerly test placement?
One message to up to 4 targets, checked over IMAP for Inbox, Promotions, Spam and Junk. With no dedicated seed list yet, tests fall back to Warmerly's own mailboxes and are labelled Limited accuracy.
What is Limited accuracy?
A label on a test that went to Warmerly's own warmup mailboxes because no independent seed mailboxes were available. It does not change health and is left out of the spam score.
Does Mailwarm publish how it tests placement?
No. Its FAQ says spam scores are usually based on seed testing across different providers. It gives no sample size, frequency or list of seeded providers.
Sources
Mailwarm 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
See it on your own mailbox.
Connect a mailbox. Warmerly runs alongside whatever you send from now, so you can compare before you move anything.
Free plan, no card. Paid plans: 7-day trial, first charge on day 8.