Free tool
Cold email spam checker
Paste your email body and get an instant hygiene score: spam-trigger words, link count, capitalisation, length, and tone. Free, and it runs entirely in your browser.
How to keep cold emails out of spam: the checklist
There is rarely one reason cold email lands in spam. It is the sum of many small signals: who you are, how you send, who you send to, and what you say. Get the basics right across all four and inbox placement follows.
1. Prove who you are
Set up SPF, DKIM and DMARC on your sending domain; unauthenticated bulk email is increasingly treated as guilty until proven innocent. Send cold outreach from a dedicated domain or subdomain, so a campaign never puts your primary domain's reputation at risk. Our cold email deliverability guide covers SPF, DKIM and DMARC setup.
2. Send like a person, not a cannon
- Warm up new mailboxes before sending real volume.
- Keep per-mailbox daily volumes modest and ramp up gradually.
- Spread volume across several mailboxes rather than overloading one.
- Send consistently rather than in large, unpredictable bursts.
3. Keep your list clean
- Verify email addresses before a campaign; bounces damage your reputation fast.
- Suppress every bounce and opt-out so you never email them again.
- Drop role addresses and obvious dead ends.
4. Write like a person
This is the part the checker above scores.
- Plain, short, conversational text beats a heavily designed template.
- Go easy on links and avoid image-only emails.
- Skip spam-trigger words and shouty formatting.
- Always include a clear way to unsubscribe.
Deliverability is not a trick you turn on. It is a hundred small habits that add up to "this is a real person worth letting through". For the mailbox side, see how email warmup works.
Frequently asked
How do I stop my cold emails going to spam?
Clean copy is one part: avoid spam-trigger words, limit links, skip ALL CAPS, and keep it short and personal. The bigger factors are a properly authenticated domain (SPF, DKIM, DMARC), a warmed mailbox, and sensible sending volume.
Does this checker guarantee inbox placement?
No tool can. This checks copy hygiene only. Real deliverability also depends on your domain reputation, authentication, and how recipients engage with your mail.
What can this checker not see?
Anything outside the text you paste. It cannot see your domain's SPF, DKIM and DMARC records, your mailbox's sending history, your daily volume or the quality of your list, which is why the checklist on this page covers those too.
Clean copy plus careful sending
HuntSales sends from your own mailbox with per-mailbox daily limits and suppression built in, plus an optional warmup ramp on paid plans.
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