Paste your subject line and body to flag spam-trigger words and common deliverability red flags before you hit send — with a quick risk score and specific fixes.
Enter a subject and body to scan for spam-trigger words and deliverability red flags.
Advisory only. Spam-word lists are a minor signal — inbox placement is driven mostly by domain reputation, authentication (SPF/DKIM/DMARC), warmup, and engagement. Runs in your browser; nothing is submitted.
A spam-word checker scans your subject line and email body for words and phrases that filters associate with promotional or scam mail — like 'act now', 'free money', '100% guaranteed', 'click here', and excessive currency symbols — plus heuristics such as ALL-CAPS words, multiple exclamation marks, and too many links. It returns a risk score and the specific flags so you can rewrite them. Important caveat: word choice is only a minor part of deliverability. Whether you land in the inbox is driven far more by sending reputation, authentication (SPF, DKIM, DMARC), domain warmup, and how recipients engage. Use this tool to remove obvious red flags, not as a guarantee of inbox placement.
Modern spam filters lean far more on sender behavior than vocabulary: your domain's reputation, whether SPF/DKIM/DMARC pass, how warmed-up the sending inbox is, complaint and bounce rates, and recipient engagement. A perfectly 'clean' email from a cold, unauthenticated domain still lands in spam; a plain, human email from a well-warmed, authenticated domain usually doesn't. Treat this checker as hygiene, not a deliverability strategy.
It flags common spam-trigger phrases (money/urgency/guarantee language), ALL-CAPS words (which read as shouting), multiple exclamation marks, currency or 'free'/'% off' language in the subject line, three or more links in a first-touch email, and overly long bodies. Each flag adds to a risk score. None of these is fatal on its own, but stacking several is a clear pattern filters notice.
Keep it short (roughly 50–125 words), write like a person not a brochure, avoid hype and money language, use one link or none, and personalize the opening so it doesn't look mass-sent. Then make sure the fundamentals are in place: authenticate your domain, warm up new inboxes, send from dedicated sending domains, and keep your list clean. The copy matters, but the infrastructure matters more.
Common triggers include urgency and money language ('act now', 'free money', 'earn extra cash', 'guaranteed', '100% free', 'risk-free'), salesy phrases ('click here', 'buy now', 'limited time'), and excessive currency symbols. Formatting red flags matter too: ALL-CAPS words, multiple exclamation marks, and lots of links. The checker on this page flags these and scores the overall risk.
It helps, but no — it's not enough on its own. Inbox placement is driven mostly by sending reputation, authentication (SPF/DKIM/DMARC), inbox warmup, list quality, and recipient engagement. Cleaning up spam words removes one minor risk factor; if your domain isn't authenticated and warmed up, even clean copy can land in spam.
Short. Roughly 50–125 words tends to work best for first-touch cold email — long enough to be relevant and make one clear ask, short enough to be read on a phone in a few seconds. The checker flags bodies over ~200 words because long cold emails get skimmed and can look like a newsletter.
Yes — it's free and runs entirely in your browser; nothing you paste is submitted or stored. JYNI offers it alongside the deliverability fundamentals that actually move the needle: managed sender domains, warmup, and CAN-SPAM-compliant sending built into the platform.
JYNI brings lead discovery, outreach, CRM, documents, and content into one workspace. Explore the industry and use-case hubs for the niches you serve.
JYNI combines AI lead discovery, compliant cold email from managed domains, and a CRM in one workspace — so finding, reaching, and managing customers happens in one place.
Book a Call →