How to avoid spam filters - spam words in cold outreach

What are spam trigger words?

Spam words - specific terms or phrases that email providers flag as suspicious. These words are linked to scams, misleading promotions, aggressive sales tactics, and clickbait subject lines.

How do spam filters detect spam words?

Spam filters look for a combination of:

• specific words and phrases commonly used in spam emails
• unusual formatting (all caps, excessive punctuation)
• suspicious links or attachments
• poor email reputation (low engagement, high bounce rates)

What words should I avoid in emails?

Spam trigger words fall into several categories:

• exaggerated claims (100% guaranteed, best price)
• urgency and pressure tactics (act now, limited time)
• suspicious or unethical behavior (no hidden costs, buy direct)
• attempts to sound personal (dear friend, you are a winner)
• job opportunities and side gigs (make money fast, financial freedom)

Do spam words in the subject line matter more?

Yes! Subject lines that overpromise, use clickbait, or sound misleading are major spam triggers. Your subject line should always match the content inside.

How can I check if my email will go to spam?

Use spam checkers before sending. These tools analyze your email and flag potential issues, including: spam trigger words, formatting problems (all caps, excessive punctuation), poor email structure. So, double-check your emails with the technical team.

One of the biggest risks in cold outreach is using spam trigger words, which can cause emails to be filtered out before they’re even seen. This is about not only the body of the email but also about the subject lines, which should be clear, honest, and reflect the content. All this is a combination of wording, formatting, and strategic outreach.