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It runs entirely in your browser and scores the copy-side signals filters weigh: known spam-trigger words, link count, ALL-CAPS shouting and length. You get a score plus the exact issues to fix, so you can clean an email before it ever touches your sending domain.
Free tool
Spam & Deliverability Checker
Scan your cold email for spam-trigger words, too many links, ALL-CAPS, length and other deliverability red flags — instantly.
All free tools
How the spam checker works
A worked example
An email with “FREE guarantee, act now!!!”, three links and a line in capitals will score low and list each problem. Drop the hype words, cut to one link, lose the caps, and the score climbs to the clean range. The words are the fastest thing to fix and often the difference between the inbox and the promotions tab.
What a good result looks like
Aim for zero flagged words and at most one link in a cold email. But copy is only one lever: domain authentication (SPF, DKIM, DMARC), sending reputation and list quality decide most of your placement. This tool fixes the copy; verify your list and warm your domains for the rest.
Frequently asked questions
What does the spam checker look for?+
Spam-trigger words, too many links, ALL-CAPS shouting and length problems, the copy-side signals that hurt inbox placement. It runs in your browser and returns a score plus the specific issues to fix.
Will a clean score guarantee I land in the inbox?+
No. Copy is only one factor. Domain authentication (SPF, DKIM, DMARC), sending reputation and list quality matter more. This tool fixes the copy side; the rest is infrastructure.
How many spam words is too many?+
Even one high-risk word can trip a filter. Aim for zero flagged words in a cold email.
Does it use AI or cost anything?+
Neither. It is free, runs entirely in your browser, and uses rules rather than AI.
Why this tool is free
We build and run outbound for a living. This tool is the same thinking we apply to client campaigns, packaged as something you can use in seconds with no signup beyond a single email. If you would rather have the whole system built and run for you, that is what Provena does — see the results.