Check your email for spam trigger words and risky formatting before you send. Paste your subject and message to get an instant spam score, highlighted problem words and clear fixes.
Paste a subject line and email body to see your spam score, the trigger words found and how to fix them.
An email spam checker reviews your email content before you send it. Spam filters at Gmail, Outlook and other providers look at many signals, and the words and formatting in your message are one of them. This tool finds the content patterns that filters and readers often treat as spam, so you can fix them before your email goes out.
Every email starts at 100. Each problem the checker finds takes points away, and the more serious the problem, the more points it costs. Suspicious phrases such as "verify your account" cost the most, because they are common in phishing. Trigger words in the subject line cost extra, since the subject is the first thing both filters and readers see.
| Score | Rating | What it means |
|---|---|---|
| 80 to 100 | Looks good | Your content is unlikely to cause spam problems. Send it, as long as your domain setup is right. |
| 50 to 79 | Needs work | A few phrases or formatting habits look like marketing spam. Fix the issues listed and check again. |
| 0 to 49 | High spam risk | The email reads like a typical spam message. Rewrite the subject and the main paragraph before sending. |
The score updates as you type, so you can change one sentence and see the effect right away.
Here is a typical promotional email and a cleaner version of the same offer. Both sell the same thing. Only one sounds like a real business.
Subject: FREE GIFT!!! Act now, limited time
Dear friend, this is not spam! You have been selected for a 100% free gift. Click here now to claim your prize before it expires today. Risk-free, no strings attached!
Subject: Your free sample is ready, Sarah
Hi Sarah, thanks for signing up last week. As promised, we've set aside a free sample of our new coffee blend for you. You can pick your roast on the order page until 30 November.
What changed: the capital letters and exclamation marks are gone, "dear friend" became a real name, vague hype became a specific product and date, and "click here now" became a normal link to the order page.
Content is only part of the picture. Inbox providers also check whether your domain is authenticated with SPF, DKIM and DMARC, how your sending address and IP have behaved in the past, whether you send to old or invalid addresses, and how many recipients mark your emails as spam. A clean score here means your content is unlikely to be the problem.
To keep invalid addresses off your list, check them first with our email checker.
Act now, limited time, expires today, last chance, hurry, final notice.
100% free, make money, extra income, double your, lowest price, fast cash.
Guaranteed, risk-free, no strings attached, once in a lifetime, you are a winner.
Click here, this is not spam, dear friend, verify your account, wire transfer.
Modern filters at Gmail and Outlook use machine learning and look at hundreds of signals. Content matters, but a perfect score cannot save an email sent from a badly set up domain. These are the five areas that decide where your email lands:
| Area | What filters look at | How to check it |
|---|---|---|
| Content | Trigger phrases, shouting, links, subject line | This spam checker |
| Authentication | SPF, DKIM and DMARC records for your domain | SPF checker and DMARC checker |
| Reputation | How your domain and sending IP have behaved in the past | Google Postmaster Tools for Gmail traffic |
| List quality | Bounces from invalid or old addresses | Email checker |
| Engagement | Opens, replies, and how often people click "Report spam" | Your email platform's reports |
Google's email sender guidelines ask all senders to keep the spam rate shown in Postmaster Tools below 0.3%. Anyone sending more than 5,000 emails a day to Gmail accounts must also use SPF, DKIM and DMARC and offer one-click unsubscribe in marketing emails.
Yes, but not the way they used to. A single word like "free" will not send a good email to spam on its own. Filters are smarter than a simple word list. What they do notice is a pattern: lots of hype words, capital letters, urgency and vague offers together. That pattern is what spam has looked like for years, so filters and readers both react to it.
There is a second reason to care. Even when a spammy email reaches the inbox, people are more likely to ignore it or mark it as spam. Those spam reports hurt your reputation, which affects every email you send after that. Clean, specific writing helps on both fronts.
Want test inboxes that do not fill up your own? Create a free temporary email address to receive test sends.
Need a cleaner draft? Rewrite your email with our AI email writer, then check it again here.