Avoid These 284 Deadly Spam Trigger Words For Better Inboxing

ByNupur Mittal


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You created the perfect email with an intriguing subject line - You Won 100$, Open to Claim! and thought it would give you higher opens.

But, your face dropped as you saw your email keep hitting higher and higher spam rates. And you thought, what did I do wrong? We guess you used a spam word, i.e., WON 100$ in your subject line, which might have triggered the spam filters, so your email landed in the spam folder.

A cartoon with hands on his eyes and showing a disappointing look

Such incidents can happen if you aren't aware of spam words. So, we have curated a list of 284 spam words you should avoid in the subject line and email copy to keep a healthy distance from spam filters.

Table of contents

What are spam words?

Spam words are frequently used in unsolicited emails and include phrases associated with scams, manipulative language, overpromising, and financial gain. Such words may trigger spam filters, causing low deliverability rates and harming the sender's reputation.

What are spam trigger words?

Spam trigger words are words or phrases that can cause emails to be flagged as spam by email providers. These words are often associated with scams, gimmicks, and promises that sound too good to be true. Examples of spam trigger words include "earn extra cash," and "earn money fast".

Email spam words are phrases or keywords in your subject line and email copy that email providers mark as malicious or spammy. These words activate the spam filters, causing your emails to land in the user's spam folder instead of their inbox.

Apart from the words, the context also matters.

As spam filters are getting more advanced, they won't automatically send your emails to spam if they contain words like "discount code" or "claim your offer." But, you'll be in trouble if you.

  • Stuff plenty of spammy keywords.
  • Use lots of emojis exclamations.
  • Use all capslock, bright red fonts.

The image below reflects the spam words used in the subject line, which is why this email landed in the spam folder. Other than that, in the beginning, the sender is using all caps lock, which is another red flag.

Examples of spam email - All caps lock and spam trigger word in the subject line

Spam words are just one of many factors that land email in the junk folder, impacting the campaign’s deliverability.

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Proven subject line framework to get higher opens

284 spam trigger words you should avoid

Here are all the words you must avoid in your email subject line and copy to ensure that you don't get trapped by spam filters.

Symbols or exaggerated numbers

  • #1

  • $$$

  • 0%

  • 0% risk

  • 777

  • 99%

  • 99.9%

  • 100%

  • 100% more

  • 100% free

  • 100% satisfied

  • 50% off

Avoid words that create unnecessary urgency

  • Access for free

  • Access now

  • Access right away

  • Act immediately

  • Act now

  • Action required

  • Apply NOW

  • Apply Online

  • At no cost

  • Buy Now

  • Buy direct

  • Cancel at any time

  • Cancel now

  • Cancellation required

  • Claim your discount NOW!

  • Claim your prize

  • Click below

  • Click here

  • Exclusive deal

  • Exclusive discount

  • Exclusive offer

  • Expiring soon

  • For instant access

  • Get it now

  • Get out of debt

  • Get out of debt NOW

  • Get started now

  • Hurry up

  • Important information regarding

  • Instant weight loss

  • Limited time

  • Limited time deal

  • Make $

  • Make Money

  • Now only

  • Offer expires in X days

  • Once in a lifetime deal

  • Once in a lifetime opportunity

  • Once in lifetime

  • Online biz opportunity

  • Only for today

  • Save up to

  • Sign up free today

  • Stuff on sale

  • Supplies are limited

  • Take action now

  • Time-limited

  • Urgent

  • Vacation offers

  • Weight loss

  • While in stock

  • While you sleep

Avoid using exaggerated claims and a number

  • 100% money back

  • Best bargain

  • Best offer

  • Best price

  • Big bucks

  • Double your leads

  • Double your cash

  • Double your income

  • Double your wealth

  • Earn extra profit

  • Earn $

  • Earn extra cash

  • Earn money

  • Earn per week

  • Extra cash

  • Extra income

  • Extract email

  • F r e e

  • For just X$

  • For only XXX amount

  • Free bonus

  • Free cell phone

  • Free consultation

  • Free DVD

  • Free gift

  • Free grant money

  • Free hosting

  • Free info

  • Free information

  • Free installation

  • Free instant

  • Free investment

  • Free iPhone

  • Free leads

  • Free membership

  • Free money

  • Free preview

  • Free quote

  • Free sample

  • Free trial

  • Full REFUND

  • Guaranteed deposit

  • Guaranteed income

  • Guaranteed payment

  • Huge discount

  • Incredible deal

  • Instant earnings

  • Instant income

  • Instant offers


  • Lose weight

  • Lose weight instantly

  • Lowest price

  • Lowest price ever

  • Money back

  • Money making

  • Money-back guarantee

  • Potential earnings

  • Recover your debt

  • Recover your debt instantly

  • Satisfaction guaranteed

  • Save $

  • Save Big Money

  • Serious cash

  • Subject to cash

  • They keep your Money — no refund!

  • Unlimited

  • Work at home

  • Work from home

  • You are a winner!

  • You have been chosen

  • You have been selected

  • You will not believe your eyes

  • Zero chance

  • Zero percent

  • Zero risk

Avoid words that make your sound spammy or too salesy

  • Affordable

  • Auto email removal

  • Bargain

  • Cheap

  • Claims

  • Claims not to be selling anything

  • Claims to be in accordance with some spam law

  • Claims to be legal

  • Clearance

  • Compare rates

  • Confidential

  • Confidentially on all orders

  • Deal breaker

  • Dig up dirt on friends

  • Don't delete

  • Don't hesitate

  • Easy terms

  • Explode your business

  • Fast cash

  • Free access

  • Hidden assets

  • Hidden charges

  • Info you requested

  • Information you requested

  • Join millions

  • Junk

  • Loan approved

  • Loans

  • Mass email

  • Never before

  • New customers only

  • No extra cost

  • No hidden costs

  • No interests

  • No medical exams

  • No middleman

  • No risk

  • No strings attached

  • Not intended

  • Not junk

  • Not spam

  • Open this email!

  • Please read

  • Priority mail

  • Prize

  • Profits

  • Promise

  • Pure profits

  • Requires initial investment

  • Risk-free

  • Save big money

  • Sent in compliance

  • Special discount

  • Special promotion

  • Strong buy

  • This isn't a scam

  • This isn't junk

  • This isn't spam

  • This won't last

  • Undisclosed

  • Undisclosed recipient

  • We hate spam

  • We honor all

  • Accept credit cards

  • Additional income

  • Avoid bankruptcy

  • Beneficiary

  • Billing

  • Billing address


  • Bonus credited

  • Buying judgments

  • Cash bonus

  • Cashcashcash

  • Cashless

  • Check credited

  • Consolidate debt

  • Consolidate debt and credit

  • Cost

  • Credit

  • Eliminate bad credit

  • Eliminate debt

  • Income from home

  • Investment decision

  • Low insurance premium

  • Low mortgage rates

  • Lower interest rate

  • Lower monthly payment

  • Lower rates

  • Lower your mortgage rate

  • Lowest insurance rates

  • Million dollars

  • Outstanding amount

  • Outstanding values

  • Pennies a day

  • Stock alert

  • Stock disclaimer statement

  • Stock pick

  • Unsecured credit

  • Unsecured debt

  • Unsolicited

  • XXX amount credited

  • XXX$ credited


  • Be your own boss

  • Brand new pager

  • Casino

  • Compete for your business

  • Congratulations

  • Credit card offers

  • Home employment

  • Home-based business

  • Legal

  • Legal notice

  • Marketing solutions

  • Meet singles

  • Meet women

  • Miracle

  • Month trial offer

  • Mortgage

  • New domain extensions

  • Obligation

  • Order shipped by

  • Order status

  • Orders shipped by the shopper

  • Passwords

  • Purchase

  • Removal

  • Removes wrinkles

  • Reverses aging

  • Rolex

  • Round the world

  • Score with babes

  • Section 301

  • Shopping spree

  • Social security number

  • Terms and conditions

  • University diplomas

  • Valium

  • Viagra

  • VIP

  • What's keeping you?

Free spam words checker tools

To foolproof your emails from email spam words, you can run the copy and subject line through these spam checker tools:

1. Mail Meteor spam checker

This tool gives your content a score from poor to good where poor means high chances of getting into the spam folder and vice-versa. It also highlights sentences and words into five different categories - Urgency, Shady, Overpromise, Money, and Unnatural. This detailed breakdown helpss you identify and remove such words.

2. Folderly spam checker

This tool help you identify spam words in your subject line and email copy. Based on that, it gives you a score out of 100 showing the chances of landing in the recipient's inbox.

3. Autoklose spam checker

Add your subject line and email copy and it will highlight all the spam trigger words. Besides, it also offers valuable tips to get your email delivered to the inbox.

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Additional tips to stay out of the email spam folder

Here are 5 crucial tips you should follow to pass through spam filters:

• Ensure emails are authenticated: SPF, DKIM, and DMARC

If your email passes through the email authentication protocols, the chances of getting to the recipient's inbox increase. These protocols signal internet service providers (ISP) that your emails are sent from a legitimate domain by an authenticated sender and don't have any spammy content.

Sender Policy Framework (SPF): SPF ensures that you send emails from an authenticated domain, not a relay server.

Domain Keys Identified Mail (DKIM): DKIM is an email security standard that ensures messages are not modified while traveling between the recipient and sending servers.

Domain-based Message Authentication, Reporting & Conformance (DMARC): DMARC is the actionable protocol. It means DMARC will take action when DKIM/SPF fails on your sender’s domain.

• Monitor your IP reputation

A low IP reputation can be due to IP blacklisting, getting hit by spam traps, or sending a high volume of emails without proper warmup. All these factors work as a red flag, triggering the ISP’s spam filters.

So, you must keep an eye on your IP reputation using tools like Google Postmaster or MxToolBox.

• Maintain a higher domain reputation

A higher domain reputation would mean that emails from your sender domain are less likely to be trapped in the email provider’s spam filters. Hence, you will get higher deliverability.

To monitor your domain reputation, you can use the Google postmaster tool and get insights into how your domain performs among Gmail users.

• Practices email list hygiene

Email list building is crucial for reaching out to your subscribers but cleaning it consistently to maintain a healthy email list rate is equally essential. A healthy or hygienic email list is when you remove unsubscribed users so that you don’t accidentally send them emails and risk landing in the spam folder.

Besides, you should also suppress inactive and unengaged users by implementing a sunset policy to avoid sending them emails despite their disengagement.

• Make your emails engaging and relevant

Besides the technicalities, if your emails are relevant to the recipient, they will either unsubscribe or stop interacting. This leads to lower open and clicks rates signaling ISPs that you might be sending irrelevant emails. So, put yourself in your audience’s shoes, study their pain points, and behavior, and use that data to create emails that add value.


It’s a horrible feeling to see all your time, efforts, and resources getting hit by the spam train just because you weren’t aware of the words that might trigger the spam words.

But, now you have the list which you can refer to while writing your emails. Always keep this list handy and you’ll see higher open rates.

What you should do next

Hey there, thanks for reading till the end. Here are 3 ways we can help you grow your business:

  1. Talk to an email expert. Need someone to take your email marketing to the next level? Mailmodo’s experts are here for you. Schedule a 30-minute email consultation. Don’t worry, it’s on the house. Book a meet here.

  2. Send emails that bring higher conversions. Mailmodo is an ESP that helps you to create and send app-like interactive emails with forms, carts, calendars, games, and other widgets for higher conversions. Get started for free.

  3. Get smarter with our email resources. Explore all our knowledge base here and learn about email marketing, marketing strategies, best practices, growth hacks, case studies, templates, and more. Access guides here.

What should you do next?

Thanks for reading till the end. Here are 3 ways we can help you grow your business:


Get smarter with our email resources

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Do better email marketing with Mailmodo

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Talk to an email expert

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