Email spam checker
Paste your email, get an instant read on what spam filters will think — free, no signup, and nothing you type leaves your browser.
Plus AI that writes clean, personal cold emails in the first place. Free plan, no card.
What this tool checks
The same lint Outreach Studio runs before any campaign sends: known spam-trigger phrases ("act now", "risk-free", "100% free"…), exclamation-mark and ALL-CAPS abuse, repeated punctuation, link count, subject-line length, and money amounts in the subject. Each is a pattern real spam filters weigh against you.
Why cold emails land in spam
Three things decide inbox placement: your domain's authentication (SPF, DKIM, DMARC — check yours with our free DNS checker), your sending behavior (volume, pace, bounce rate), and your content — which is what this tool checks. Clean content won't save an unauthenticated domain, but spammy content can sink a perfectly authenticated one.
Quick rules for cold email that deliver
- Under 150 words, plain text, one link at most
- No trigger phrases — write like you'd write to a colleague
- Personalize genuinely: their business, their industry, their problem
- One clear, low-friction ask (a reply beats a booking link)
- Always include a working unsubscribe option
- The full playbook — authentication, warm-up, volume, monitoring — is in the deliverability guide.