Email spam checker

How to use the email spam checker

Review potentially confusing or promotional wording before sending. This free email spam checker examines the pasted content locally and offers specific revisions without pretending to predict a mailbox provider decision.

1. Paste the subject and the email body as HTML or plain text. Include the final links and image markup if you want structural checks.
2. Select Check email to produce a local report. Recheck after editing because the report describes the version you submitted.
3. Read the highlighted phrases in context. Replace vague urgency and unsupported promises with accurate details.
4. Review link density, insecure or shortened destinations, missing image descriptions, hidden content, and repeated formatting.
5. Confirm consent, authentication, unsubscribe handling, and list quality outside this tool. Send a test and monitor delivery and complaint signals.

Words are signals, not a blacklist

A legitimate email can contain words such as free, urgent, or guaranteed. No individual phrase automatically makes a message spam. The important questions are whether the claim is accurate, expected by the recipient, and supported by the rest of the message. This checker highlights a small set of phrases that deserve review. Suggested alternatives are prompts to write more specific copy, not tricks to evade filters. Describe an actual offer, date, policy, or eligibility requirement.

Links, images, and formatting

Several links are normal in a newsletter, but a short message crowded with destinations can become confusing. Use a recognizable HTTPS domain and a clear primary action. If most of the message is one image, add readable text and meaningful alt descriptions. Hidden preheader text is common and can be legitimate; inspect hidden content rather than automatically deleting it. Repeated punctuation and excessive capitals deserve attention because they can undermine trust and readability.

What this checker cannot inspect

This is a content heuristic, not SpamAssassin, a blocklist service, a live DNS lookup, or a mailbox placement test. It cannot verify your SPF, DKIM, DMARC, IP reputation, domain history, reverse DNS, user engagement, or unsubscribe processing. It also cannot determine whether a recipient opted in. Those factors often matter more than wording. A clean report means only that the implemented content checks found no obvious concerns.

Use the report as an editorial review

Prioritize findings that affect recipient understanding. Remove misleading promises, make link destinations recognizable, and write an email that makes sense without images. Keep unsubscribe and required sender information intact. Do not alter honest language merely to avoid a highlighted word. After revising, run the check again and send through your production platform to a small test group. Watch complaints, hard bounces, deferrals, and actual conversions rather than relying on a synthetic spam score.

Common questions