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Will this email land in spam?
Paste your subject and body. You get a score out of 100, the exact phrases and habits that spam filters punish, and what to change, as you type. Nothing leaves your browser.
Paste a subject and body. Your score, an inbox preview and every flagged phrase update as you type, and nothing leaves your browser.
- 1.Paste the subject line and body of the email you are about to send.
- 2.Read the score and the list of issues; the most damaging come first.
- 3.Rewrite the flagged phrases, keep one link at most, and aim for 80 or above.
What spam filters actually look for in copy
Content is the smaller half of deliverability (reputation and authentication matter more), but it is the half you control in the next five minutes. Filters weigh phrases that scams and promotions use ("act now", "100% free", "you have been selected"), shouting in capitals, punctuation storms, URL shorteners that hide where a link goes, and pages of links.
Deceptive subject lines are the costliest habit of all: a fake "Re:" may lift opens once, and then trains every recipient and provider to distrust you.
What a cold email that reaches the inbox looks like
Short, plain text, one specific observation about the recipient, one question, one link at most, and a real signature. It reads like a person wrote it to one person, because filters are increasingly trained on exactly that difference.
Do this automatically
Leads Ranger checks every step of every campaign like this before it sends, then warms your mailbox and watches the replies.
Straight answers
Questions, answered.
80 or higher on this checker means no strong spam signals. Between 50 and 80 the email can work but carries habits worth removing. Below 50, rewrite it before it touches a mailbox you care about.
Less than reputation and authentication, but yes. Filters score many weak signals together, so a few trigger phrases on a new domain with no warm-up can be the difference between inbox and spam. They also make your email read like an advertisement to the human who opens it.
Yes. It uses the same trigger list, weights and thresholds as the spam check Leads Ranger runs on every campaign step before launch, so the score you see here is the score you would see in the app.
Go deeper
Guides from the Ranger Playbook
Guide · 7 min read
Spam Trigger Words: What Actually Sends Cold Email to Junk
Why word lists are mostly folklore, what modern filters really weigh, the structural signals that do get you filtered, and where to look when your mail is not landing.
Read the guide→Guide · 10 min readWhy Your Emails Go to Spam: 14 Causes and How to Fix Each One
A diagnostic checklist for cold email that lands in spam, ordered from most to least common, with the specific fix for each cause and how to tell which one is yours.
Read the guide→Guide · 7 min readCold Email Subject Lines: What Works Now That Open Rates Lie
Why you can no longer A/B test subject lines on opens, the four patterns that still earn a read, the tricks that cost you trust, and how to test properly.
Read the guide→Guide · 10 min read8 Cold Email Templates That Get Replies (and the Reason Each One Works)
Eight cold email structures with the psychology behind each, when to use them, and the edits that turn a template into something that could only have been sent to one business.
Read the guide→Free during the open pilot
Now find someone to send it to.
Leads Ranger finds local businesses with real emails, warms your mailboxes and runs the outreach. No credit card.
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Free during the open pilot