Spam filters… tend to red flag subject lines both in Emails and Auto-responder messages that look overly promotional, manipulative, or “just too good to be true”.
Here are some of the most common trigger words and patterns you’ll want to avoid in your autoresponder and Email subject lines, if you don’t they will go straight to SPAM
Superlatives & Exaggerations like:
Once in a Lifetime,
Miracle Amazing,
Incredible,
Mind-Blowing
Banned,
Secret.
Once in a Lifetime,
Miracle Amazing,
Incredible,
Mind-Blowing
Banned,
Secret.
Hidden Calls to Action with High Pressure
Click Here,
Buy Now Order Today,
Only X Left,
Limited Supply,
Hurry Up!
Health.
Buy Now Order Today,
Only X Left,
Limited Supply,
Hurry Up!
Health.
Weight-Loss & Health
Weight Loss,
Diet,
Lose Weight.
Fast Viagra,
Cialis,
Weight Loss,
Diet,
Lose Weight.
Fast Viagra,
Cialis,
Pharmacy Miracle Cure,
No Side Effects All-Caps.
No Side Effects All-Caps.
Excessive Punctuation & Symbols:
BUY NOW,
!!!!!!!,
*******, INSTANT.
BUY NOW,
!!!!!!!,
*******, INSTANT.
Impersonal Greetings like:
Dear Friend,
Dear Sir/Madam
To Whom It May Concern
Dear Sir/Madam
To Whom It May Concern
Best Practices to Stay Out of Spam Be transparent:
- Use your brand name or a real person’s name. Keep it personal :
- Include the recipient’s name if possible. Limit punctuation :
- One exclamation point is fine; more looks like spam. Avoid deceptive tactics :
- Don’t use “Re:” or “Fwd.” if it’s not a reply/forward.
- Test before you send :
- Run your subject line through a spam-checking tool (e.g., MailTester, GlockApps).
By steering clear of these red-flag words and patterns—and keeping your subject line clear, honest and reader-focused—you’ll greatly reduce the chance your auto-responder ends up in the spam folder.