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What You'll Learn
Even with proper authentication and technical setup, the words and structure of your emails play a huge role in deliverability. Learn how to write content that inboxes instead of landing in spam.
📖 Content That Lands in the Inbox (Avoiding Spam Triggers)
Lesson 13
2 min read
Interactive
Introduction
Your email content is the final layer that determines if your message makes it to the inbox or the spam folder. Spam filters look for patterns, language, and formatting that resemble junk mail.
Common Spam Triggers to Avoid
Overuse of “spammy” words
- Examples: “FREE!!!”, “Act now!”, “100% guaranteed”
- Tip: It’s okay to use persuasive language, but avoid clichés and excessive emphasis.
Excessive punctuation and capitalization
- “READ THIS NOW!!!” raises red flags.
- Keep subject lines natural and human.
Too many links or images
- Balance text and media.
- Emails with only an image and no text often get flagged.
Unclear sender identity
- Use a recognizable “From” name and email address.
- Avoid no-reply addresses.
Misleading subject lines
- Don’t trick readers (e.g., “Re: Your account” when it’s not a reply).
- Subject and body should match.
Missing plain-text version
- Always send a plain-text fallback with your HTML email.
- Many filters look for this as a trust signal.
Best Practices for Inbox-Friendly Content
- Personalize emails (use the recipient’s name, past activity).
- Keep formatting simple (avoid too many colors, fonts).
- Add a clear unsubscribe link (required by law, improves trust).
- Check email before sending using spam-check tools (e.g., MailTester, GlockApps).
🥋 Sensei Tip
Write like you’re emailing a friend. If your message feels like a pushy ad, spam filters will treat it that way too.
⏱️ Est. reading time: 2 minutes
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