Spam wordchecker.
Paste a cold email and see what a spam filter notices: trigger words, too many links, shouting in capitals and other habits that cost you the inbox.
How it works
- Paste your emailSubject and body together
- See what's flaggedWords, links, capitals, length
- Edit and recheckThe score updates as you type
Free, no sign-up. Runs in your browser. Nothing you type is sent anywhere.
The tool
Paste your email
Subject and body together. Nothing leaves your browser.
How a spam filter sees it
What actually helps
- One link at most in a first email, and no tracked link on a new domain.
- Plain text: no images, colours or buttons.
- Under 120 words. Long first emails read like newsletters.
- Write like an email to a colleague: no capitals, no!!!
How much words really matter.
What the result means, and how to fix what it finds.
Words are a small part
Modern spam filters care far more about who you are than what you write: your domain's reputation, its authentication and how people react to your email. A clean domain can survive the word 'free'; a burned one won't reach the inbox with perfect copy. So fix your setup first, then your words.
Why the words still matter
Words that sound like advertising, such as act now, guarantee, risk-free or click here, make an email look like a campaign rather than a note to one person. Filters weigh them a little, and the people you write to weigh them a lot. An email that reads like marketing gets ignored or reported, and reports are what really hurt you.
Links and formatting
One link at most in a first email, and ideally none: ask a question instead. Images, buttons and colours make an email look designed, which is the opposite of what a cold email should look like. Tracked links on a new domain are a common cause of spam placement, so keep link tracking off until the domain has a history.
Length and tone
Keep first emails under 120 words. Write the way you'd write to a colleague: lowercase subject, no exclamation marks in a row, no words in capitals. If your email would look out of place in a colleague's inbox, it will look out of place in your prospect's too.
Test before you send
The only way to know where an email lands is to send it. Send your draft from the mailbox you will use to a few addresses you control at Gmail, Outlook and Yahoo, and see where it arrives. If it lands in spam everywhere, the problem is usually the domain or its setup; if only one provider files it as spam, look at that provider's rules and your content. Change one thing at a time between tests, or you won't know what helped. And don't send the same test many times in a row, which looks like a burst of bulk email.
In mailzy
Write better cold emails, faster.
mailzy's AI writer rewrites your emails and drafts new versions to test, right in the campaign editor. You see every word before it's sent.
Questions before you start.
Ask us on the chat if yours isn't here. A real person answers.
Will removing spam words fix my deliverability?
Rarely on its own. Reputation and authentication matter far more. Check your domain with the Domain Health Checker too.
Is 'free' always a problem?
No. One mention in a natural sentence is fine. Filters react to many such words together, and to the overall feel of the email.
Does anything I paste get stored?
No. The checker runs in your browser; nothing is sent to us.
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