Send one message to our test mailbox and this free email deliverability test grades six layers: authentication, DNS, spam filters, blacklists, headers, and content. A free email inbox placement test with a full report, no signup.
We will create a unique mailbox for this session, then take you to a dedicated result page where the mailbox, live status, and final report are shown.
Generate a private mailbox, then review the result on its own page.
After you click generate, we will take you to a dedicated result URL where the mailbox, live status, and final report are shown.
Send a real sample
Use the same sending platform, from-address, links, and template that you plan to use in production.
Keep the result page open
We poll the test status automatically on the dedicated result page and fetch the report as soon as the message is analyzed.
Use the findings
Start with authentication and DNS issues first, then move to spam, content, and header warnings.
Six independent layers. A domain can be perfect on five and still lose deliverability on the sixth, which is why the deliverability test grades each one separately.
SPF, DKIM, DMARC, ARC, and reverse DNS as the receiving server concluded them. The highest-impact deliverability layer.
MX, SPF, DKIM selectors, DMARC policy, PTR, and BIMI resolved from the domain that actually sent, which is where deliverability often leaks.
SpamAssassin and Rspamd scoring with the triggered rules named, so the deliverability test tells you what to fix rather than just how bad it is.
Plaintext part, unsubscribe method, link health, and text-to-image ratio — the deliverability layer most tools skip entirely.
Deliverability degrades quietly. A free email deliverability test is the cheapest way to find out before your open rate does.
Run the email deliverability test with the real template before a campaign. Content scoring only means anything on the message you are actually sending.
New sending platform or rotated DKIM key. Each change can break alignment in a way DNS lookups miss but a deliverability test catches immediately.
A deliverability problem and an audience problem look identical in the open-rate chart. The deliverability test separates them in two minutes.
Reputation drifts on warm domains. A monthly free email inbox placement test catches slow deliverability degradation before it becomes a cliff.
What gets measured
Deliverability is not one number. An email deliverability test sends a real message to a real mailbox and grades six independent layers, because a domain can be perfect on five of them and still land in spam because of the sixth.
The deliverability test reads what the receiving server concluded, not what your DNS claims. A record can resolve perfectly and still fail alignment on the message you actually sent.
This is the layer with the highest deliverability impact per unit of effort. Fix authentication first and most other deliverability numbers improve on their own, which is why the deliverability test leads with it.
MX, SPF, DKIM selectors, DMARC policy, PTR, and BIMI. The email deliverability test resolves each one from the domain that actually sent the message rather than the one you meant to use.
A mismatch between the From domain and the Return-Path domain is where a lot of deliverability quietly leaks away, and a DNS lookup alone will not show it — only a deliverability test on a real send does.
The free email deliverability test runs your message through two open scoring engines and reports the triggered rules by name, not just a total.
Named rules are the actionable part. A deliverability score with no rule list tells you deliverability is bad without telling you which deliverability problem to fix.
Sending IPs are checked against the major blacklists, the header chain is checked for alignment, and the message body is checked for a missing plaintext part, missing unsubscribe, broken links, and text-to-image ratio.
Content is the deliverability layer people skip. A deliverability test that ignores it will call an image-only message healthy right up until it lands in Promotions.
Reading the score
The overall number is a summary. The subscores are where the work is.
One weak layer can be masked by a strong average. Read the authentication and blacklist subscores individually, because those two do the most damage when they fail.
The email deliverability test breaks them out for exactly this reason: one deliverability subscore near zero matters more than a good average.
SPF fail, DKIM fail, or DMARC misalignment. These are configuration problems with concrete fixes, and they are the first thing to repair after any deliverability test.
Fix the record, resend, and run the free email deliverability test again — authentication is the one layer where a retest immediately proves the fix.
The most urgent finding a deliverability test can produce. It affects delivery to real recipients today rather than gradually.
Find the cause before requesting delisting, and check the list hygiene that usually caused it — a blacklist listing is the fastest deliverability collapse there is.
Missing plaintext part, no unsubscribe method, heavy image ratio, or link issues. None of these is fatal alone; together they push a message toward Promotions or spam.
This is the deliverability layer to work on once authentication is clean and no blacklist listing exists.
When to run it
Deliverability degrades quietly. Nothing notifies you, and by the time open rates drop the cause is weeks old.
Run the email deliverability test with the actual template you are about to send, not a plain-text sample. Content scoring only means something on the real message.
Then verify the list too — for that, use Bulk Email Verification, because a clean deliverability test cannot save a campaign aimed at dead mailboxes.
New sending platform, changed SPF record, rotated DKIM key. Each one can break alignment in a way that resolves fine in a DNS lookup and still fails on a real send.
A free email deliverability test catches that within minutes rather than after a campaign.
A deliverability problem and an audience problem look identical in the open-rate chart. The deliverability test separates them.
If the deliverability test is clean, the cause is content, timing, or list fatigue rather than deliverability infrastructure.
Reputation drifts. Running a free email inbox placement test monthly on an established domain catches slow degradation before it becomes a cliff.
It costs nothing and takes two minutes.
Limits
The test grades one message on measurable layers. Three things stay outside it.
A free email inbox placement test tells you the message is technically sound. Gmail, Outlook, and Yahoo each apply private reputation models on top of that.
A clean deliverability test raises the odds substantially; it does not decide the folder.
Reputation is built over months of volume, complaints, and engagement. One deliverability test is a snapshot of configuration, not of history.
Postmaster tools from the providers are the only window into deliverability history; a single test cannot reconstruct it.
A perfect deliverability score and a list full of dead addresses are entirely compatible. Hard bounces damage reputation regardless of how clean the test came back.
Verification and the deliverability test are two halves of one pre-send checklist, and skipping either one costs deliverability.
Reference
Each layer the email deliverability test grades has its own specification and its own dedicated checker.
SPF is RFC 7208 and DMARC is RFC 7489. Both define exactly what the authentication layer of a deliverability test measures.
Reading them is optional; knowing the deliverability test grades against a published standard rather than an opinion is not.
The deliverability test grades a sent message. The SPF Checker and DMARC checker grade the records themselves, which is the faster loop while you are fixing them.
Use those to iterate, then a free email deliverability test to confirm the fix survives a real send.
Deliverability is half configuration and half list quality. Email List Cleaning removes the bounces and spam traps that no configuration fix can offset.
An email deliverability test on a dirty list measures the wrong half of the problem.
An email deliverability test sends one real message to a test mailbox and grades what happened to it: authentication, DNS records, spam-filter scoring, blacklist status, header alignment, and content. It measures deliverability on a real send rather than predicting it from configuration alone.
Copy the generated address, send your message to it from the system you actually use, and wait. The deliverability test parses the received message and returns a full report with an overall score and six subscores, usually within a minute.
Start with the subscores rather than the overall number. One weak layer can hide behind a strong average, and the email deliverability test breaks out authentication and blacklists separately because those two do the most damage when they fail.
The free email deliverability test names each triggered SpamAssassin and Rspamd rule rather than giving a bare score. Read the rule names: missing plaintext part, absent unsubscribe, and heavy image ratio are the three that come up most, and all three are content fixes rather than deliverability infrastructure.
Authentication, then blacklists, then content. That is the order of deliverability impact. Fix the failing record, resend, and run the email deliverability test again — authentication is the one layer where a retest immediately proves the fix worked.
Repair whatever the deliverability test named, then verify your recipient list. Hard bounces damage sending reputation regardless of how clean the free email deliverability test came back, so configuration and list hygiene are two halves of the same job.
No. A free email inbox placement test tells you the message is technically sound. Gmail, Outlook, and Yahoo each apply private reputation models on top of that, and no deliverability test can query those. A clean result raises the odds substantially; it does not decide the folder.
It is parsed to produce the deliverability report and retained only as long as the report is available. The email deliverability test does not add your sending address to any list.
Send a message from that domain to the address this free email deliverability test generates. The report covers every layer that decides deliverability for that domain: authentication, DNS, spam scoring, blacklists, headers, and content.
Two things: the deliverability test names the triggered spam rules instead of returning a bare score, and it checks the recipient side of your sending too. Most mail testers grade the message and stop there, which measures half of deliverability.
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A free email deliverability test grades your configuration. Dead addresses damage deliverability no configuration fix can offset — verify the list too.
Free email deliverability test · Six deliverability subscores · Deliverability report in minutes · Deliverability test, no card
