100+ Top Email Spam Trigger Words and Phrases to Avoid

Alissa MacDougall
Posted on:
Thu, Sep 8, 2016
Reading Time:
2 minutes
Blog, Email Marketing
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When you’re crafting the perfect email, sometimes the subject line is the hardest part to complete. You have to encapsulate the entirety of your email in a line that’s not too short and not too long and is engaging enough for readers to open the email.

On top of that, you need to worry about whether or not your subject line will get picked up by spam filters. These filters can be triggered for many reasons – commonly because the subject line contains a trigger word that is known to be associated with emails that cause problems.

To aid in your pursuit of the perfect subject line, we have compiled a list of the top 100 words and phrases you should avoid in order to avoid having your email picked up by spam filters.

#1 $$$ 100%
Act now Action Additional income
Affordable All natural/new Amazed
Apply now Avoid Be amazed/your own boss
Beneficiary Billing Billion
Bonus Boss Buy
Call free/now Cancel Cash
Casino Certified Cheap
Click here Clearance Collect
Compare rates Congratulations Credit card/check/offers
Cures Deal Dear friend/somebody
Debt Discount Direct email
Don’t delete/hesitate Double your income/cash Earn
Extra Expire Fantastic
Free access/money/gift Freedom Friend
Get it now/started/paid Great Guarantee
Hello Income Increase sales/traffic
Instant Investment Junk
Limited Lose Lowest price
Luxury Make $/money Medicine
Money Name No credit check/experience
Now Obligation Offer
Only Open Order now
Please Presently Problem
Promise Purchase Quote
Rates Refinance Refund
Remove Request Risk-free
Sales Satisfaction Save
Score Serious Spam
Success Supplies Take action
Terms Traffic Trial
Unlimited Urgent Weight
While supplies last Win Winner


In addition to excluding these words from your email subject lines, there are a few other things you can avoid to limit the chance that your email will be picked up by spam filters.

  • Don’t add RE: to subject lines if it’s not a reply
  • Don’t use all caps
  • Don’t make spelling mistakes
  • Don’t use one-word subject lines
  • Don’t use video/Flash/JavaScript
  • Don’t use exclamation points in your subject line
  • Don’t embed forms in emails

How did these tips work for you? Let us know in the comments below!

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