517 spam & “bad word” triggers to avoid in Emails

Quick note: these aren’t “illegal” to use—but stuffing emails with them (especially in subject lines, ALL CAPS, or with lots of punctuation) can trip filters. Use natural, contextual phrasing instead.

— easy to copy/paste list below —

Too good to be true
Free money
Pure profit
Risk free
No obligation
Free gift
Limited time
Expires
Act now
Click below
Instant access
Don't delete
Fantastic deal
Special promotion
Lowest price
Best rates
Best price
Mortgage rates
Refinance
Lower interest rates
Life insurance
Unsecured credit
Credit card
Dear friend
Sir or madam
You've been selected
Weight loss
All natural
Join millions
Multi-level marketing
Increase sales
Own boss
Financial freedom
Extra income
Extra cash
No hidden costs
No hidden charges
Act now!
As seen on
Attention
Bad credit
Bargain
Billion
Certified
Decision
Discount
Double your income
Eliminate debt
Fast cash
Fees
FREE
Guarantee
Hot
Increase
Lose weight
Make money fast
Marketing
Million dollars
Money
Money making
No medical exams
No purchase necessary
Online pharmacy
Opportunity
Partners
Performance
Rates
Satisfaction guaranteed
Search engine listings
Selling
Success
Trial
Visit our website
100% free
OPEN (all caps)
O P E N (spaced letters)
O.P.E.N (punctuated letters)
!!!
$$$
100%
100% more
100% satisfied
Additional income
Be your own boss
Big bucks
Cents on the dollar
Consolidate debt
Double your cash
Earn extra cash
Earn money
Eliminate bad credit
Expect to earn
Free access
Free consultation
Free hosting
Free info
Free investment
Free membership
Free preview
Free quote
Free trial
Full refund
Get out of debt
Get paid
Giveaway
Guaranteed
Increase traffic
Incredible deal
Lower rates
Make money
Miracle
Money back
Once in a lifetime
One time
Pennies a day
Potential earnings
Prize
Promise
Risk-free
Save big money
Save up to
Apply now
Become a member
Call now
Click here
Get it now
Do it today
Don’t delete
Exclusive deal
Get started now
Important information regarding
Information you requested
Instant
New customers only
Order now
Please read
See for yourself
Sign up free
Take action
This won’t last
Urgent
What are you waiting for?
While supplies last
Will not believe your eyes
Winner
Winning
You are a winner
You have been selected
Bulk email
Buy direct
Cancel at any time
Check or money order
Congratulations
Confidentiality
Cures
Direct email
Direct marketing
Hidden charges
Human growth hormone
Internet marketing
Mass email
Meet singles
No catch
No cost
No credit check
No fees
No gimmick
No hidden fees
No interest
No investment
No questions asked
No strings attached
Not junk
Notspam
Obligation
Passwords
Requires initial investment
Social security number
This isn’t a scam
This isn’t junk
This isn’t spam
Undisclosed
Unsecured debt
Unsolicited
Valium
Viagra
Vicodin
We hate spam
Xanax
Accept credit cards
Ad
All new
Beneficiary
Billing
Bonus
Cards accepted
Cash
Cheap
Claims
Clearance
Compare rates
Credit card offers
Deal
Debt
Fantastic
In accordance with laws
Income
Investment
Lifetime
Loans
Luxury
Marketing solution
Message contains
Name brand
Offer
Online marketing
Opt in
Pre-approved
Quote
Removal
Reserves the right
Score
Search engine
Sent in compliance
Subject to
Terms and conditions
Unlimited
Warranty
Web traffic
Work from home
0%
0% risk
777
99%
99.9%
4U
Auto email removal
Call me
Calling creditors
Cannot be combined
Cash-out
Discount
Do it now
Do it today
Don’t hesitate
Earn $
Earn monthly
Email marketing
Expire
Fantastic offer
For instant access
For just $
For only
Free bonus
Guaranteed income
Guaranteed payment
Gift certificate
Great deal
Great offer
High score
Home employment
Home-based business
Huge discount
Hurry up
Guaranteed deposit
Important information
Important notification
Increase your chances
Info you requested
Instant earnings
Initial investment
Laser printer
Legal notice
Lifetime access
Lifetime deal
Limited amount
Limited time offer
Loan
Monthly payment
Never before
New domain extensions
No age restrictions
No deposit required
No hidden fees
No investment required
Now only
Potential earnings
Price protection
Print form signature
Problem
Promise you
Purchase now
Pure profit
Rate
Real thing
Refund
Removal instructions
Request now
Requires investment
Sale
Sample
Save $
Save money
Sign up free today
Take action now
Talks about prizes
The best rates
Time limited
Traffic
Undisclosed recipient
Unlimited
US dollars
Warranty expired
We honor all
Website visitors
While stocks last
You are a winner!
You have been chosen
Zero chance
Zero percent
Zero risk
Your chance
Your income
Your status
€€€
£££
50% off
A few bob
Accept cash cards
Affordable
Affordable deal
Avoid bankruptcy
Bank
Bankruptcy
Billing address
Billion dollars
Billionaire
Card accepted
Cash out
Cashcashcash
Casino
Check
Claim your discount
Costs
Credit
Credit bureaus
Credit or Debit
Dollars
Double your
Double your wealth
Earn
Earn cash
Earn from home
Earn per month
Earn per week
Earn per year
Easy income
Easy terms
F r e e
For free
Free priority mail
Increase revenue
Increase sales/traffic
Instant income
Insurance
Investment advice
Make $
Money-back guarantee
Mortgage
One hundred percent free
Only $
Price
Profits
Save $
Subject to credit
US Dollars
Why pay more?
Scam
Fraud
100% guaranteed
Access now
Act fast
Amazing deal
Apply now
Best deal
Big profit
Can’t miss
Deal ending soon
Double your money
Free membership
Great news
Guaranteed results
Increase sales
Instant savings
Must read
No catch
No cost
No strings attached
Only available here
Order now
Special invitation
Special offer
Thousands
Unbeatable offer
Unbelievable
Unlimited
Wonderful
Access
Act
Act immediately
Action required
Apply here
Apply online
Become a member
Before it’s too late
Being a member
Buy
Buy today
Call
Call free
Call free/now
Can we have a minute of your time?
Cancel now
Cancellation required
Claim now
Click
Click me to download
Click now
Click this link
Click to get
Click to remove
Contact us immediately
Don’t waste time
Expires today
Final call
For Only
For you
Friday before holiday
Get it away
Get now
Get started
Great offer
Immediately
Information you requested
Now
Offer expires
Once in lifetime
Order today
Purchase now
Sign up free today
Supplies are limited
Take action now
Today
Top urgent
You are a winner
100% natural
Certified organic
Clinical trial
Cure for
Diet pill
Doctor recommended
Double blind study
Fat burner
Fast weight loss
Get slim
Guaranteed weight loss
Hair growth
Lose weight fast
Medical breakthrough
Miracle cure
Natural remedy
No prescription needed
Over-the-counter
Pain relief
Prescription drugs
Reverse aging
Safe and effective
Scientifically proven
Secret formula
Youthful skin
Access your account
Account update
Activate now
Antivirus
Change password
Click to verify
Confirm your details
Confidential information
Data breach
Download now
Final notice
Free antivirus
Important update
Immediate action required
Improve security
Install now
Last warning
Log in now
New login detected
Online account
Password reset
Payment details needed
Phishing alert
Secure payment
Security breach
Security update
Update account
Verify identity
Warning message
Adult content
Bet now
Big win
Blackjack
Casino bonus
Cash out now
Click to win
Exclusive access
Free chips
Free spins
Gamble online
Hot deal
Instant winnings
Jackpot
Live dealer
Lottery winner
Lucky chance
Online betting
Online casino
Online gaming
Poker tournament
Risk-free bet
Slots jackpot
Spin to win
Try for free
VIP offer
Winner announced
Winning numbers
XXX

Formatting gotchas (avoid)

ALL CAPS in subjects (“FREE”),
S p a c e d l e t t e r s,
Over-punctuation: “!!!”, “$$$”, “100% free”.

Selfhostedsmtp.com (deliverability note)

If you’re sending via selfhostedsmtp.com, you don’t have to obsess over every single trigger word. We optimize server reputation, authentication (SPF/DKIM/DMARC), rDNS, and IP warm-up so your Mail-Tester score is 10/10 by default—we guarantee it. You’ll still want natural wording, but our setup does the heavy lifting.

517 SPAM words to avoid in Emails

Formatting gotchas (avoid)

Selfhostedsmtp.com (deliverability note)

See also: Mail-Tester walkthrough