Warmerly
On demand, 3 tests a month on Free and 5 on Starter; scored from inbox, promotions and spam checks; accuracy limited today and said so
Warmerly
Mystrika
One-to-one · Inbox placement testing
Inbox placement testing
One row, in depth: what each tool does, the verified numbers, and who each suits.
Mystrika details read from Internet Archive copies of its own pages (home page 11 October 2026, product and use-case pages 10 July 2026, help centre and tools pages from 2024 to 2026), because mystrika.com refused automated reads on 22 October 2026.
Warmerly
On demand, 3 tests a month on Free and 5 on Starter; scored from inbox, promotions and spam checks; accuracy limited today and said so
Mystrika
Daily deliverability status on every plan, tooltip: Email Reputation Monitoring; no seed list or test method described
The short answer
Inbox placement testing, in one look.
Warmerly runs a placement test you can start yourself: one message from the mailbox to up to 4 targets, checked in Inbox, Promotions, Spam and Junk and scored 100, 60, 10 or 0. It also says plainly that today the targets are its own warmup mailboxes, so the result carries a Limited accuracy note. Mystrika lists a daily deliverability status on every plan and publishes placement claims, but we found no description of a test, a seed list or what the status is made of. Last checked 22 October 2026.
Mystrika
Daily deliverability status on every plan, tooltip: Email Reputation Monitoring; no seed list or test method described
The picture
Drawn side by side.
Score a test
Warmerly sends one message to up to 4 targets and averages where it landed. Choose a result for each target.
WarmerlyMystrika
Warmerly2 targets at your provider, 2 at another
67.5(100 + 100 + 60 + 10) / 4
Where the 4 targets come from today
- 1Seed mailboxes at Gmail, Outlook, YahooNone enabled in production
- 2Consenting customer mailboxes in the warmup networkBuilt, off by default
- 3Warmerly's own warmup mailboxesUsed today. Limited accuracy.
MystrikaWhat its pages describe
Daily deliverability statusTooltip: Email Reputation Monitoring?
- A test you can startNot found
- A seed listNot found
- Results by folderNot found
- What feeds the statusNot stated
Spam test for templatesProvider Match, from DominatePlacement figures: no method shown
| Tool | What it offers |
|---|---|
| Warmerly | A test you start, with up to 4 targets, scored 100 for the inbox, 60 for Promotions, 10 for spam and 0 for missing, then averaged. Today the targets are its own warmup mailboxes, so accuracy is limited. |
| Mystrika | A daily deliverability status on every plan, a spam test for templates and Provider Match from Dominate. No placement test, seed list or status definition found. |
The example starts at two inbox results, one Promotions and one spam, which gives 67.5. A test run on Warmerly's own warmup mailboxes would usually score near 100, which is why the app labels it Limited accuracy.
On screen
What it looks like.
WarmerlySample data
How Warmerly does it
Warmerly, in detail.
Warmerly's placement test is a real mechanism with a stated method, a monthly allowance and a stated weakness. It sends a message, looks for it over IMAP and scores where it landed. The weakness is the target list: no dedicated seed mailboxes at Gmail, Outlook or Yahoo are in production yet.
01
What one test does
The runner picks up to 4 targets, 2 at the sender's own provider and 2 at another, and sends one message from the mailbox's own SMTP with a subject that carries a unique token. After a wait it opens each target over IMAP and searches Inbox, Promotions, Spam and Junk for that token. The wait is 30 seconds for a test you start and 90 seconds in the daily sweep.
Warmerly product, checked 22 October 2026
02
How the score is worked out
Each target scores 100 for the inbox, 60 for Promotions, 10 for spam and 0 for missing, and the test score is the average. As an example of arithmetic on those numbers, two inbox results, one Promotions and one spam give (100 + 100 + 60 + 10) / 4 = 67.5. The score is a placement measure for that one message at that moment, not a promise about the next campaign.
Warmerly product, checked 22 October 2026
03
On demand, and once a day for some
A test started from a mailbox's Health tab holds the request open and returns in about 45 to 60 seconds with four targets. A daily sweep tests up to 5 accounts per run and skips any account tested in the last 24 hours. A run left in the running state for more than 20 minutes is marked failed, so a crash does not leave a test pending forever.
Warmerly product, checked 22 October 2026
04
A monthly allowance, shown per plan
Placement tests are metered: 3 a month on Free, 5 on Starter, 25 on Growth and 100 on Agency. Warmup sends are not metered.
Warmerly product, checked 22 October 2026
05
The weakness, stated in the code and in the app
There are three possible target sources. Dedicated seed mailboxes at Gmail, Outlook and Yahoo come first and none is enabled in production. Consenting mailboxes of other customers in the warmup network are a second option, built but switched off by default. The third is Warmerly's own warmup mailboxes, which accept almost everything, so a run that uses them scores near 100 whatever the sender's real reputation is. The account page shows a Limited accuracy note on such a result. The document recording this was last checked on 15 October 2026.
Warmerly product, checked 22 October 2026
06
A weak test never touches the health score
A degraded run returns before it writes health data. If it did write, a two-mailbox sample would overwrite the day's real sent, inbox and spam counts and the inflated score would raise the mailbox's warmup quota. Degraded rows are also kept out of the spam placement figure and, in the same way, out of the trend: a change is reported only when the two latest tests are the same kind.
Warmerly product, checked 22 October 2026
07
The real-seed option and its guard rails
The switch is PLACEMENT_REAL_SEEDS, off by default. If turned on, targets must be consenting, customer-connected Gmail or Outlook mailboxes in healthy warmup, never the sender's own workspace, at most one per customer per run, with caps of 2 per customer and 2 per mailbox per rolling 24 hours. The lookup fetches only the Message-ID header of the test message. The documentation says the option has not been run against production.
Warmerly product, checked 22 October 2026
08
A refund promise tied to the test history
The 30-day inbox guarantee on paid outreach plans refunds a month's plan fee if a mailbox warming continuously for 30 days shows no placement improvement between its first test and one on or after day 30, with conditions. There is no automated claim flow: support checks the test history by hand. Given the limits above, this guarantee is only as strong as the tests behind it.
Warmerly product, checked 22 October 2026
How Mystrika does it
Mystrika, in detail.
Mystrika talks about inbox placement in outcomes: a daily deliverability status on every plan, claims about improvement and a guarantee line in its footer. The pages we read describe no placement test, no seed list and no breakdown by provider, and they do not say what the status is made of.
01
Daily deliverability status on every plan
The plan lists show Daily deliverability status on the Free Forever plan and on Growth, with the paid plans above it inheriting everything from Growth. The tooltip beside it reads Email Reputation Monitoring. The page does not say whether the status is a number, a colour or a message, or which signals feed it.
web.archive.org/web/20261011203858/https://mystrika.com · read 2026-10-22 (Internet Archive copy of 2026-10-11)
02
Placement stated as an outcome
The home page and its FAQ promise better placement within a stated number of days and print a guarantee line under the sign-up buttons. We do not repeat the figures, because the pages show no test, sample or condition behind them. The same page says a customer can prove inbox lift with real outreach on the free plan, which puts the measuring in the customer's hands.
web.archive.org/web/20261011203858/https://mystrika.com · read 2026-10-22 (Internet Archive copy of 2026-10-11)
03
The warmup page is more careful
Mystrika's July 2026 warmup page says that warmup helps reputation but that list quality, copy, volume and domain setup still matter, and says it gives controls for the whole system. That is a fair statement and it fits how any placement number should be read.
web.archive.org/web/20260710203939/https://mystrika.com/products/email-warmup · read 2026-10-22 (Internet Archive copy of 2026-07-10)
04
Rotation and volume controls
The home page lists IP and domain rotation that reduces throttling risk, automatic volume rotation that keeps warm inboxes healthy, and warmup tuned to domain age and reputation. These are controls that act on sending rather than ways to measure where a message landed. The page does not explain how rotation picks a mailbox.
web.archive.org/web/20261011203858/https://mystrika.com · read 2026-10-22 (Internet Archive copy of 2026-10-11)
05
Provider Match, from Dominate
Provider Match, in the Dominate plan list, matches sending mailboxes to the prospect's email provider. The 2024 lifetime-deal page gives the reasoning in Mystrika's own words: mail from Google to Google and Microsoft to Microsoft goes through fewer filters than cross-delivery. That is Mystrika's claim and we did not test it.
web.archive.org/web/20241127064236/https://mystrika.com/lifetime · read 2026-10-22 (Internet Archive copy of 2024-11-27)
06
A spam test for templates
The home page FAQ says imported templates are run through a spam test that looks at deliverability factors and suggests improvements. That checks copy before sending, which is different from checking where a sent message landed.
web.archive.org/web/20261011203858/https://mystrika.com · read 2026-10-22 (Internet Archive copy of 2026-10-11)
07
A success percentage in 2024
A 2024 warmup page says the dashboard shows a Success % metric for each mailbox every day, meant to show when a mailbox is ready. The 2026 plan lists use the words daily deliverability status instead, and we cannot say whether they are the same thing.
web.archive.org/web/20240422150002/https://mystrika.com/email-warmup · read 2026-10-22 (Internet Archive copy of 2024-04-22)
08
Pools split by provider
The 2024 lifetime-deal page describes placement through warmup pools grouped as an AOL and Yahoo pool, a Google and Microsoft pool and a pool for all other providers. It describes where warmup mail is exchanged, not a test of a campaign message.
web.archive.org/web/20241127064236/https://mystrika.com/lifetime · read 2026-10-22 (Internet Archive copy of 2024-11-27)
What Mystrika does not say
We looked, and found no statement on these. That is about its published pages only, not about the product.
- A placement test you can start, or a description of how any placement figure is measured
- A seed list, or the providers a test would send to
- What the daily deliverability status is made of, or how it is drawn
- A breakdown of results by Inbox, Promotions and Spam
- The sample size or conditions behind its improvement and guarantee claims
- A monthly allowance for tests, because no test is described
- How Provider Match decides which mailbox sends to which prospect
- Whether the 2024 Success % metric still exists
Where the sources disagree
We report each version rather than pick one.
- Mystrika's 2024 warmup page describes a Success % metric per mailbox, while its 2026 plan lists say daily deliverability status. We cannot tell whether they are the same thing.
- Mystrika's home page offers a guarantee line and improvement claims, but its warmup page of July 2026 says warmup cannot fix list quality, copy, volume or domain setup. We report both.
The numbers
Only what we could verify.
| Measure | Warmerly | Mystrika |
|---|---|---|
| Inbox placement testing | On demand, 3 tests a month on Free and 5 on Starter; scored from inbox, promotions and spam checks; accuracy limited today and said so | Daily deliverability status on every plan, tooltip: Email Reputation Monitoring; no seed list or test method described |
| A test you can start | Yes, on demand, in about 45 to 60 seconds | Not found |
| Targets per test | Up to 4, 2 at the same provider and 2 at another | Not stated |
| Folders checked | Inbox, Promotions, Spam and Junk | Not stated |
| Scoring | Inbox 100, Promotions 60, spam 10, missing 0, averaged | Not stated |
| Monthly tests | 3 on Free, 5 on Starter, 25 on Growth, 100 on Agency | Not applicable, no test found |
| Daily status | Daily sweep, up to 5 accounts per run | Daily deliverability status on every plan |
| Stated weakness | Limited accuracy: targets are its own warmup mailboxes | None stated |
| Placement promise | 30-day inbox guarantee, with conditions | Guarantee line in its footer, conditions not shown |
In practice
What it means for you.
Our reading of the facts above. Not a promise, and not the only reasonable reading.
Treat a Warmerly score as a smoke test today
Because the targets are Warmerly's own mailboxes, a score near 100 does not prove Gmail or Outlook will accept your campaign. A low score, on the other hand, is worth reading: it means even friendly mailboxes did not take the message. Use the folder detail, not only the average.
Measure with your own recipients
The most direct placement check is to send to a few mailboxes you control at Gmail, Outlook and Yahoo and look in each folder. It costs nothing and it works with either tool. Mystrika's free-plan pitch, to prove inbox lift with real outreach, comes to the same thing.
Ask for the definition behind any status
When a tool shows a daily status, ask what it counts: spam complaints, bounces, folder placement or something else. Mystrika's pages do not say, and Warmerly's health score and its placement test are separate numbers with separate rules.
Do not compare a score to a claim
A placement figure from a test and a placement claim in marketing copy are different kinds of thing. The first has a method you can read. The second has none that we could find on Mystrika's pages, so do not put them side by side in a spreadsheet.
Using the 30-day guarantee properly
The Warmerly guarantee compares a mailbox's first test with one taken on or after day 30. Run the first test before you start warming and keep the history, because support checks it by hand. Remember the accuracy limit: a first test that already scores high leaves little room to show improvement.
Who it suits
Pick the one that fits.
Warmerly
Warmerly is the better fit if
- You want a placement test you can start and a score whose method is written down
- You want the weakness of the test stated, not hidden
- You want folder detail: Inbox, Promotions, Spam or missing
- You want a written refund promise tied to test history
Mystrika
Mystrika is the better fit if
- You want a daily deliverability status on the free plan and every paid plan
- You want Provider Match, to pair sending mailboxes with each prospect's provider
- You want a spam test for templates before you send
- You are happy to judge placement yourself with test recipients
Questions
Does Mystrika have an inbox placement test?
We found none. Its pages list a daily deliverability status, with the tooltip Email Reputation Monitoring, a spam test for imported templates and a warmup Success % metric in 2024, but no test that sends a message and reports where it landed (Internet Archive copies read 22 October 2026).
How does Warmerly test inbox placement?
It sends one message from your mailbox to up to 4 targets, 2 at the same provider and 2 at another, checks Inbox, Promotions, Spam and Junk over IMAP and scores 100, 60, 10 or 0 for each, then averages. A test you start takes about 45 to 60 seconds.
Is Warmerly's placement score accurate?
Not yet fully. No dedicated seed mailboxes at Gmail, Outlook or Yahoo are enabled in production, so tests use Warmerly's own warmup mailboxes, which accept almost everything. The account page shows a Limited accuracy note, and such a run never changes the health score.
How many placement tests do I get?
3 a month on Free, 5 on Starter, 25 on Growth and 100 on Agency. A daily sweep also tests up to 5 accounts per run.
Sources
- Mystrika home page (plans, FAQ, claims), Internet Archive copy of 2026-10-11
- Mystrika email warmup product page, Internet Archive copy of 2026-07-10
- Mystrika outreach product page, Internet Archive copy of 2026-07-10
- Mystrika lifetime-deal page, Internet Archive copy of 2024-11-27
- Mystrika email warmup page, Internet Archive copy of 2024-04-22
Mystrika pages were read on 22 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
- All features
- Pricing basis and entry price
- Free plan and trial
- Senders and mailbox caps
- Prospects and slots
- Warmup pool and ramp
- Pool rules and auto-pause
- Authentication and blocklist monitoring
- Sequences and A/B tests
- AI writing and personalisation
- Reply inbox
- Connecting mailboxes
- Verification and ready-made inboxes
- Agency workspaces and white label
- API, webhooks and MCP
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