How to Write Emails That Get 40%+ Open Rates

Email marketing generates 42 for every 1 spent (DMA, 2023). But none of that matters if your emails never get opened.

A 40%+ open rate means:

✅ Your subject lines are compelling
✅ Your audience trusts your brand
✅ You’re sending at the right time

Industry Benchmarks:

• Average open rate: 21.5% (Mailchimp, 2023)

• Top performers: 35-50%+

People open emails based on 3 subconscious triggers:

A. Curiosity Gap

Example:
❌ "Our New Product Launch"
✅ "The Secret Behind Our $1M Launch (You Won’t Believe #3)"

B. Fear of Missing Out (FOMO)

Example:
❌ "Summer Sale Now Live"
✅ "Last Chance: 24-Hour Flash Sale Ends Tonight!"

C. Social Proof

Example:
❌ "Try Our Coaching Program"
✅ "How 532 Students 5X’ed Their Income (Case Study Inside)"

1. Master the "From" Name

• Use a personal name (e.g., "John from [Company]")

• Avoid generic addresses like "noreply@company.com"

2. Keep Subject Lines Under 50 Characters

• Ideal length: 6-9 words

• Mobile-friendly (cuts off after ~30 chars on phones)

3. Use Power Words

• Urgency: "Last chance," "Ending soon"

• Exclusivity: "Invite-only," "For our top customers"

• Curiosity: "You won’t believe this…"

4. Ask Questions

• "Want to double your traffic?"

• "Are you making this common mistake?"

5. Personalize Strategically

• "Hi [First Name], your custom recommendation is ready!"

• Avoid overuse (e.g., "[First Name], [First Name], buy now!")

6. Test Emojis (But Don’t Overdo It)

• Highest-performing: 🔥 🚀 💰

• Limit to 1-2 per subject line

7. Preview Text Optimization

• First 90 characters should complement the subject line

• Example:
  Subject: "Your free gift is inside 🎁"
  Preview: "Claim your SEO checklist before midnight!"

✅ Use first names (but only if you have the data)
✅ Reference past purchases ("Loved your recent order of XYZ!")
✅ Segment by interest (e.g., send cat products only to cat owners)

🚫 Avoid:

• "We noticed you browsed these 17 products…"

• "Your income is $XX, so you need this…"

Based on 10M+ emails analyzed (HubSpot, 2023):

• B2B: Tuesday, 10 AM - 11 AM

• B2C: Thursday, 8 PM - 9 PM

• Weekends: Saturday, 11 AM (for lifestyle niches)

Pro Tip: Test sending at 2 AM local time – some niches see higher opens when emails are at the top of inboxes at dawn.

Test one variable at a time:

• Subject lines (A: Question vs B: Statement)

• Send times (A: 9 AM vs B: 6 PM)

• "From" names (A: CEO’s name vs B: Brand name)

Sample Size: Wait until each variant gets 1,000+ opens before deciding a winner.

• Company A: Increased opens from 22% to 47% by adding deadlines to subject lines.

• Blogger B: Achieved 51% open rates by sending at 2 AM to early risers.

❌ Using spammy words ("Buy now!!!", "Guaranteed $$$")
❌ Sending too frequently (more than 3x/week without consent)
❌ Ignoring mobile users (50%+ opens happen on phones)

• Subject Line Tester: CoSchedule Headline Analyzer

• A/B Testing: Mailchimp, ConvertKit

• Send Time Optimization: Seventh Sense

✔ Subject line under 50 chars
✔ Preview text complements subject
✔ Personalization checked
✔ Mobile preview tested
✔ Spam score < 3 (test with Mail-Tester.com)

Q: How long should my subject line be?
A: 6-9 words (under 50 characters).

Q: Are emojis worth using?
A: Yes, but test – some audiences prefer text-only.

Q: How often should I email my list?
A: Start with 1-2x/week, adjust based on engagement.