How to use the Spam Word Checker
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What Is the Spam Word Checker?
Email spam filters use complex algorithms to decide whether your email reaches the inbox or the spam folder. One major factor is the presence of "spam trigger words" - phrases that have been historically associated with spam emails.
The Spam Word Checker scans your email copy and identifies words and phrases that could trigger spam filters, reducing your deliverability. It gives you a deliverability score and specific flags to fix.
How It Works
Paste your email subject line, preheader, or body text. The tool scans it against a database of 50+ known spam trigger words and phrases. It also checks for excessive capitalization and exclamation mark usage.
You get a score out of 100 (higher is better) and a list of every trigger word found with its count. Remove or rephrase flagged words to improve deliverability.
Improving Email Deliverability
- Avoid ALL CAPS in subject lines - it's the #1 spam signal
- Limit exclamation marks to 1 per email maximum
- Replace "free" with "complimentary" or "at no cost"
- Don't use "guarantee" - try "promise" or "commitment" instead
- Authenticate your domain (SPF, DKIM, DMARC)
- Maintain a clean list - high bounce rates hurt deliverability
- Use a consistent "From" name that subscribers recognize
Useful for
- Checking email copy before sending campaigns
- Improving email deliverability rates
- Training team members on spam-safe copywriting
- Troubleshooting low open rates caused by spam filtering
Who should use it
- Email marketers sending to large lists
- E-commerce brands running promotional campaigns
- Anyone experiencing deliverability issues
- Copywriters writing email content for clients
Common mistakes to avoid
- Obsessing over spam words while ignoring domain reputation and list hygiene
- Removing all flagged words even when they're contextually appropriate
- Not checking both subject line AND body copy
- Using spam checker only on problem emails instead of as a standard pre-send check
When not to use it
- For internal emails where spam filtering isn't a concern
- When your deliverability issues are caused by technical problems (missing SPF/DKIM), not content
Frequently asked questions
Will removing all spam words guarantee inbox delivery?
No. Spam word avoidance is one factor among many. Domain reputation, sender authentication, engagement rates, and list hygiene all play major roles. But removing spam triggers is a quick win that improves your odds.
Are some spam words worse than others?
Yes. Words like "congratulations," "winner," and "act now" in all caps are heavily weighted. Context matters too - "free" in a subject line is worse than "free" buried in body copy.
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