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Spam Words to Avoid in Cold Email [2025]

Introduction

In today's digital marketing landscape, the success of your cold email campaigns significantly depends on your emails landing in the recipient's primary inbox—not the spam folder. Email spam filters have become increasingly sophisticated, making it critical to carefully select your email wording. The presence of certain "spam words" can trigger filters and hurt deliverability.

Platforms like mailgo, an AI-powered cold email marketing solution, have been specifically designed to improve email deliverability, minimize spam triggers, and enhance overall engagement through intelligent automation.

What Are Spam Words and Why They Matter?

Spam words are specific terms or phrases commonly flagged by email spam filters due to their association with unsolicited or deceptive emails. Email providers employ advanced algorithms to detect spam and safeguard their users from unwanted or potentially harmful emails. If your cold emails contain these words excessively or out of context, your emails might end up in the spam folder, drastically reducing your open rates and conversion potential.

For businesses engaging in cold email marketing, this is particularly important since initial contact with potential leads depends entirely on high deliverability.

Spam Words to Avoid

Spam words generally fall into several categories, each with unique triggers that spam filters closely monitor:

1. Financial Triggers

These words frequently promise financial gain or incentives:

100% Free
Guaranteed income
Make money fast
Extra cash
Incredible deal
Additional income
Affordable
Bargain
Best price
Big bucks
Cash bonus
Double your income
Earn money
Expect to earn
Fast cash
Free access
Free consultation
Free membership
Incredible deal
Lower rates
Money back
Pure profit
Unsecured credit

Using financial language excessively or without clear context is a red flag for spam filters.

2. Urgency & Pressure

Words creating a sense of unnecessary urgency or pressure are also flagged:

Act now
Limited time offer
Offer expires
Urgent
Immediate action required
Act immediately
Call now
Don't delete
Expires soon
Final offer
Get it now
Hurry up
Instant access
Offer ends soon
Once in lifetime
Only available today
Order now
Special promotion
Today only
Don't wait
Last chance
Offer expires
Now or never
Deadline approaching
Response required
Must read

Though urgency can effectively prompt action, overusing such phrases often triggers spam filters.

3. Promotional Language

Overly aggressive promotional words can negatively impact deliverability:

Buy now
Special promotion
Discount
Free gift
Best price
Best deal
Deal of a lifetime
Incredible
Lowest price
Premium
Save big
Risk-free

While promotional language can be effective, it's crucial to maintain balance.

4. Health & Pharma Terms

Spam filters particularly scrutinize health-related terms:

Lose weight
Miracle cure
Diet pills
Fast results
Pharmaceutical breakthroughs
Magic pill
No exercise needed
Anti-aging
Doctor approved
Health guarantee
Natural remedy
New discovery
Revolutionary treatment
Test results

Emails with such claims often raise red flags, as they frequently appear in spammy contexts.

5. Suspicious Links/Attachments

Phrases that prompt suspicious interaction are high-risk:

Click here
Download immediately
Open attachment
Access now
Direct access
Download free
Instant download
See details
Submit information
Visit our website
Follow this link
Go here now
Join now
More details
Read more
Watch video

Spam filters consider these terms risky, especially in unsolicited emails.

a representation of spam words in cold emails

Why Cold Emails Are More Sensitive to Spam Triggers

Cold emails inherently face more rigorous scrutiny from spam filters since recipients haven't previously interacted with the sender. Consequently, the wording of your initial outreach emails becomes critical. Using spam-triggering language increases the likelihood that your first impression is never actually received, as your email might be caught by spam filters.

Mailgo recognizes this challenge and provides pre-warmed email accounts and AI-powered content creation to ensure a higher probability of landing directly in primary inboxes.

Best Practices to Stay Out of Spam

Following best practices significantly improves email deliverability:

Contextual Use of Spam Words: If necessary, use spam words sparingly and within clear, logical contexts.
Natural and Authentic Language: Avoid excessive capitalization, multiple exclamation marks, and overly sales-focused language.
Personalization: Tailored content reduces the chance of emails appearing automated and spam-like.
Write Valuable Email Content: Write things that your leads really care, provide as much as useful information and insights. Learn more tips about writing good emails that get replies.
Regular Testing: Use spam-checking tools frequently to evaluate email quality before sending.

a representation that mailgo can add bonus to your business

How Mailgo Helps You Bypass Spam Filters

Mailgo enhances email deliverability through several intelligent methods:

Pre-Warmed Email Accounts:

Mailgo provides ready-to-use, pre-warmed email accounts with established sender reputations, significantly reducing spam risk.

AI-Generated Emails:

Mailgo's AI generates contextually relevant, personalized, and human-like email content, naturally avoiding common spam phrases.

Smart Scheduling:

Intelligent scheduling ensures emails are sent at optimal times based on recipients' time zones and engagement patterns, improving open rates and reducing bounce rates.

Conclusion

Avoiding spam words is fundamental to successful cold email marketing. Leveraging tools like mailgo can further ensure your emails reach their intended audience, maximizing effectiveness and growth opportunities.

Ready to boost your cold email deliverability and engagement? Start your free mailgo trial today and see the difference this intelligent, spam-safe email marketing tool can make!