Warmerly
Checked every six hours per mailbox, with a written fix; free DMARC reports, with no alerts.
Warmerly
Mailivery
One-to-one · SPF, DKIM and DMARC checks
SPF, DKIM and DMARC checks
One row, in depth: what each tool does, the verified numbers, and who each suits.
Mailivery details read from its pricing page, home page, product pages and API page on 21 October 2026.
Warmerly
Checked every six hours per mailbox, with a written fix; free DMARC reports, with no alerts.
Mailivery
Not mentioned on its monitoring pages; another page says its health score uses DNS setup.
The short answer
SPF, DKIM and DMARC checks, in one look.
Warmerly checks SPF, DKIM, DMARC and MX every six hours per mailbox, with a written fix for each finding. Mailivery's monitoring pages do not mention SPF, DKIM or DMARC checks; another page says its health score is based on DNS setup, domain age and blacklist monitoring. Last checked 22 October 2026.
Mailivery
Not mentioned on its monitoring pages; another page says its health score uses DNS setup.
The picture
Drawn side by side.
How the records get looked at
SPF, DKIM, DMARC and MX
WarmerlyMailivery
WarmerlyEvery 6 hours, on its own
- SPFChecked, with a written fix
- DKIMChecked, with a written fix
- DMARCChecked, with a written fix
- MXChecked
MailiveryNot stated for the records
- Monitoring pagesSPF, DKIM, DMARC not mentioned
- Placement reportHas an Authentication section
- Health scoreSaid to use DNS setup, domain age, blacklists
- Fix instructionsListed in the placement report
Warmerly also collects DMARC reports for free, for up to 10 domains, without alerts. Mailivery's pages do not say how often it checks anything.
How often, over a day
Across one day
WarmerlyMailivery
WarmerlyA records sweep every 6 hours
06end of day
MailiveryCheck frequency not stated
A health score that mentions DNS is not a statement that each record is checked on a schedule.
On screen
What it looks like.
WarmerlySample data
How Warmerly does it
Warmerly, in detail.
Scheduled record checks per mailbox with quality tests, not only presence, a written fix for each finding, and a stated rule that advisories never alarm. DMARC reports can be collected for free.
01
Checked every six hours
The records sweep runs every six hours across every mailbox that is not dead or paused. A Re-check now option is on the mailbox Health tab.
Warmerly product, checked 21 October 2026
02
A written fix for each finding
Each finding has a title, an explanation and a fix. SPF is checked for the 10-lookup limit, DKIM for key length and test mode, DMARC for policy and reporting address.
Warmerly product, checked 21 October 2026
03
Unknown is never green
A check that could not run is shown as unknown, not as fine.
Warmerly product, checked 21 October 2026
04
Free DMARC report collection
Point your DMARC reporting address at a Warmerly address to see who sends as your domain and whether they pass, for up to 10 domains per workspace. Email digests and alerts for these reports are not built.
Warmerly product, checked 21 October 2026
05
Quality as well as presence
SPF is checked for its qualifier, for the 10 lookup limit counted through includes and redirects, and for terms that make the record unreadable. DKIM is checked for key length and test mode, and DMARC for policy, subdomain policy, percentage and a reporting address. MX is checked because a domain that cannot receive mail is a spam signal.
Warmerly product, checked 21 October 2026
06
Short keys are named
A DKIM key of 1024 bits or less is reported as short by current standards, with the fix to ask the provider for a 2048 bit key.
Warmerly product, checked 21 October 2026
07
The record to publish
Under a failing SPF or DMARC chip the app shows the exact record to add, with a copy button. SPF is suggested only for Google and Microsoft mailboxes and is merged into the record already published, because a domain may have only one.
Warmerly product, checked 21 October 2026
08
Three severities
Findings are fail, warn or info. Only fail counts toward the overall verdict, one hard failure is amber and two or more is red, so a working domain with a monitor-only DMARC policy is not painted as broken.
Warmerly product, checked 21 October 2026
09
Advisories do not alert
The sweep sends an alert only for a hard failure, never for a warning, so owners are not mailed about things that did not change and are not broken.
Warmerly product, checked 21 October 2026
10
Shared mail domains are handled
On gmail.com and outlook.com the records belong to the provider, so the app shows a Connected, nothing to set up card instead of five failing chips.
Warmerly product, checked 21 October 2026
11
DMARC reports are read, not just checked
The reports job runs every 30 minutes, unpacks zip, gzip and XML reports up to 10 MB, keeps them 90 days and stores only aggregate data, never message content.
Warmerly product, checked 21 October 2026
How Mailivery does it
Mailivery, in detail.
DNS appears in two places on its site: a health score that is said to use DNS setup, and an authentication section in the placement report. No page lists the records it reads or how often.
01
Mailbox health score
Its comparison page says the score is based on DNS setup, domain age and blacklist monitoring.
mailivery.io/competitor-comparison · read 21 October 2026
02
Authentication in the placement report
The placement report has an Authentication section.
mailivery.io/inbox-placement-test · read 21 October 2026
03
Blacklist monitoring pages are silent
The blacklist monitoring page does not mention SPF, DKIM or DMARC.
mailivery.io/blacklist-monitoring · read 21 October 2026
04
Authentication in the test report
The placement page says the test validates every SPF, DKIM and DMARC record, checks alignment and shows what is misconfigured with step by step fix instructions.
mailivery.io/inbox-placement-test · read 22 October 2026
05
A concrete example fix
The page's own example is a DKIM record missing for a subdomain, with the instruction to add a TXT record with a named selector. It is an illustration.
mailivery.io/inbox-placement-test · read 22 October 2026
06
A test, not a schedule
The authentication check is described as part of a placement test, and its pages describe recurring scheduled tests. They do not describe a separate record monitor.
mailivery.io/inbox-placement-test · read 22 October 2026
07
Health score inputs
The comparison page describes the mailbox health score as based on DNS setup, domain age and blacklist monitoring.
mailivery.io/competitor-comparison · read 22 October 2026
08
What the test says it finds
The page lists SPF, DKIM and DMARC misconfigurations as things that silently kill deliverability.
mailivery.io/inbox-placement-test · read 22 October 2026
09
Gmail connection note
Its how-it-works FAQ says Google mailboxes need an app password for connection, which is a setup step rather than a record check.
mailivery.io/how-it-works · read 22 October 2026
What Mailivery does not say
We looked, and found no statement on these. That is about its published pages only, not about the product.
- How often records are checked
- Which records are checked and what the fix instructions say
- Any DMARC report collection
- A continuous or scheduled record monitor outside placement tests
- Whether DKIM key length or SPF lookup counts are checked
- Whether a failing record raises an alert
The numbers
Only what we could verify.
| Measure | Warmerly | Mailivery |
|---|---|---|
| SPF, DKIM and DMARC checks | Checked every six hours per mailbox, with a written fix; free DMARC reports, with no alerts. | Not mentioned on its monitoring pages; another page says its health score uses DNS setup. |
| Record check interval | Every 6 hours | Not stated |
| DMARC reports | Free, up to 10 domains | Not stated |
| Written fix for each finding | Yes | Fix instructions in its placement report |
| SPF lookup limit | Counted against the limit of 10 | Not stated |
| DKIM key length | Reported if 1024 bits or less | Not stated |
| Where it runs | Sweep plus Re-check now | Inside a placement test |
| Report retention | DMARC reports kept 90 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.
The score is not the same as a check
A health score that mentions DNS is not a statement that SPF, DKIM and DMARC are each checked on a schedule.
Warmerly shows the fix
Each finding names the record to change.
Ten lookups in practice
An SPF record that includes five email tools, each needing two more lookups, reaches 10 on includes alone, which is why Warmerly counts through includes. Adding an eleventh makes receivers ignore SPF. The count is on the finding, so you see it before the sixth tool breaks it.
Every six hours, four times a day
A sweep every six hours runs four times in 24 hours, so a record you break at 09:00 is flagged by 15:00 at the latest, and Re-check now closes the gap after you fix it. Mailivery's pages describe no such schedule, so a break found only by a test could wait for the next test.
Reading authentication through a test
If you only want to read the authentication section, you run a placement test to get it, and Starter lists 10 tests. Warmerly's sweep reads the records without a test and without a credit.
Provider-managed domains
On a Gmail or Outlook address neither tool can fix the records. Warmerly says so on the card instead of showing failures.
Who it suits
Pick the one that fits.
Warmerly
Warmerly is the better fit if
- You want records checked on a published schedule
- You want the exact fix written out
- You want SPF, DKIM, DMARC and MX checked on a schedule without running a test
- You want the SPF lookup count and DKIM key length checked
- You want to collect DMARC aggregate reports without a separate tool
Mailivery
Mailivery is the better fit if
- You want authentication in a placement report
- You want a single health score across DNS, age and blacklists
- You want authentication read inside a deliverability test
- You want content, blacklist and DNS findings in one report
- You want a single health score that mentions domain age
Questions
How often does Warmerly check SPF, DKIM and DMARC?
Every six hours per mailbox, with a Re-check now button.
Does Mailivery check SPF, DKIM and DMARC?
Its monitoring pages do not say so. Its placement report lists an authentication section and its comparison page says its health score uses DNS setup.
What does Warmerly check on SPF?
The all qualifier, the 10 lookup limit through includes and redirects, and whether each address term is valid.
What happens if my DKIM key is short?
A key of 1024 bits or less is reported as short, and the fix is to ask your provider for a 2048 bit key.
Where does Mailivery check my DNS records?
Its placement test page says it validates SPF, DKIM and DMARC records and shows what to fix. It does not describe a separate monitor.
Sources
- Mailivery competitor comparison
- Mailivery inbox placement test
- Mailivery blacklist monitoring
- Mailivery how it works
Mailivery 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.
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