Email Spam Words Checker

This free email spam words checker scans your draft for the words and patterns that push emails towards the spam folder. Paste your subject line and email copy below to check email for spam trigger words before you send. It flags risky phrases, words in ALL CAPS, exclamation overload and too many links — each with a short note on what to change. No signup, and your text is analysed in your browser, never sent to a server.

What this tool checks

The checker scans your subject line and email body for known spam trigger words and risky patterns. It looks at four things: flagged spam phrases, words written in ALL CAPS, exclamation mark overload, and link count. Each flag comes with a plain-English note on what to change, so you are not left guessing.

Use it as an email copy spam checker for cold outreach, newsletters or follow-ups — anywhere inbox placement matters.

How to use it

1. Paste your copy. Drop in your subject line and email body — or check the subject line on its own.
2. Run the check. The tool lists every trigger word and risky pattern it finds.
3. Fix and re-check. Rewrite the flagged phrases in normal language, then run it again until the result is clean.

Why are my emails going to spam?

Copy is only one part of the answer. Filters also weigh your domain’s authentication, your sender reputation, how clean your list is, and whether people open and reply to your emails.

If your copy comes back clean here but emails still land in spam, check these next:

• Authentication. Run your domain through the SPF / DKIM / DMARC Checker on this site. Missing or broken records are the most common technical reason legitimate emails get filtered.
• Blacklists. If you are wondering how to check if email is blacklisted, use the Domain / IP Blacklist Checker here — it shows whether your domain or sending IP appears on common blacklists.
• Sending history. A brand-new domain or inbox that suddenly sends at volume looks suspicious to filters, however clean the copy is.

Used together, these checks give you a simple way to test email deliverability free, before a campaign goes out.

Spam trigger words to watch out for

No single word automatically sends you to spam — filters look at the overall pattern. These phrases and formatting habits are commonly associated with promotional or suspicious-looking email copy. They are not automatic triggers, and context matters. If you want to find spam trigger words in your own draft, this is the list to scan against.

• Money hype: make money fast, double your income, get rich, cash bonus
• Fake urgency: act now, limited time, expires today, urgent
• Empty promises: guaranteed, risk-free, no obligation, winner, congratulations
• Shady formatting: FULL CAPS subject lines, multiple exclamation marks, “FREE!!!”

When you check email for spam words, context counts. “Free trial” in a normal sentence is fine. Five hype phrases in one paragraph is not.The same applies if you send through Gmail or Google Workspace. Google’s filters cannot see your intentions — they read the pattern of your copy, which is why a quick scan before sending is worth the thirty seconds it takes.

A note for cold email and newsletters

Cold email gets flagged less for one bad word and more for sounding like a sales blast: hype in the subject line, several links, and pressure wording. Newsletters get flagged for similar reasons — image-heavy layouts with many links and promotional phrases throughout. Whether you use this as a cold email spam checker or a quick newsletter spam tester, the fix is the same: fewer claims, fewer links, plainer language.

How to prevent emails going to spam

1. Write subject lines like a person, not an advert. If it sounds like a banner ad, rewrite it.
2. Keep one clear idea per email and keep links low — one or two is plenty for outreach.
3. Authenticate your domain (SPF, DKIM and DMARC) and re-check the records after any DNS change.
4. Only email people who plausibly expect to hear from you, and remove addresses that bounce.
5. Warm up new inboxes gradually instead of sending at full volume on day one — the Email Warmup Plan Calculator on this site builds the schedule for you.
6. Run every new template through this checker before it goes into a sequence.

Comparing spam checkers? Read this first

People often search for the Mailmeteor spam checker, the Folderly spam words checker, Smartlead’s checker, Unspam’s tester or Lemlist’s spam words list while deciding what to use. Most of those are parts of wider deliverability platforms — warmup, inbox placement testing and monitoring — and most are paid.

This tool does one job: it reads your words. It is free, needs no account, and runs entirely in your browser, so it suits a quick pre-send check. If your copy is clean and emails still miss the inbox, the problem is rarely the wording — work through the authentication and blacklist checks above instead.

Frequently asked questions