In average, emails have a 30% open rate. Which means that every 10 emails sent, only three are opened by the receiver. Not only that, but out of those three opened emails, only 6% to 8% get clicks and interaction.

At this rate, it’s easy to see why a recipient wouldn’t notice one of your important emails sitting in spam.

There is a huge chance that these harmless emails that are sent to spam will never see the light of day.

Ultimately, the email will be deleted after a few days, because email services automatically delete emails tagged as spam.

We did some research here at the agency to find the trigger words that can cause emails to be targeted as spam.

Sure enough, there are hundreds of words that activate the spam filter. Because of its enormity, I will only list a few words in every category. 

Without further ado, here’s a list of the familiar trigger words that will surely send your email to spam. Be sure not to use them on your subject line

  1. No hidden charges
  2. Expand your business
  3. Money order
  4. Stock alert
  5. Requires initial investment
  6. Cards accepted
  7. Credit card offers
  8. Important investment decision
  9. Increase sales
  10. Move internet traffic


  1. Buy
  2. Sale
  3. Order
  4. As seen on
  5. Orders shipped by
  6. Shopper
  7. Claim
  8. No fee
  9. Order status
  10. Save up to


  1. Click here
  2. Internet marketing
  3. Click below
  4. Sales
  5. Not spam
  6. This is NOT junk
  7. Marketing solutions
  8. Unsubscribe
  9. Visit our website
  10. Search engine


  1. Cure
  2. Lose weight
  3. Remove wrinkles
  4. Stop snoring
  5. No medical exams
  6. Life insurance
  7. Valium
  8. Xanax
  9. Viagra
  10. Vicodin


  1. Free gift
  2. Free access
  3. Free delivery
  4. Free sample
  5. Free trial
  6. Free installation
  7. Free hosting
  8. Free consultation
  9. Free preview
  10. Free offer


  1. Bargain
  2. $$$
  3. Cash
  4. Cheap
  5. Big Bucks
  6. Easy cash
  7. Discount
  8. Money back
  9. Save big money
  10. Lowest price

… and the list goes on. THERE ARE STILL MORE WORDS!

It’s no wonder there are plenty of words that could send an email to spam. You have to be careful when you are writing an email because even seemingly normal adjectives such as effective, amazing, and fantastic could trigger strict spam filters.

As much as possible, avoid using the words mentioned or anything similar to them. Be mindful of your word choices. When you are not using these words in the subject lines, you are effectively increasing the chances that email land in the primary inbox rather than in the dreaded spam.

Want to get even more great insights about making sure your email won’t go to SPAM? Read this short article 4 Reasons why your email is going to Spam

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