Key Takeaways:
• The envelope determines whether your mail gets opened
• Two nearly identical envelopes were tested
• Most marketers would guess “FREE” would win
• The envelope listing recognizable evangelical leaders won by 36%
• Curiosity outperformed a free-offer headline
• Testing beats assumptions
• Small copy changes can dramatically impact response
• Direct mail success depends on disciplined testing
The success of your direct mail campaign depends on one thing:
Whether your envelope gets opened.
If it doesn’t get opened…
Your letter isn’t read.
Your offer isn’t seen.
Your sale doesn’t happen.
Envelope tease copy isn’t decoration.
It’s leverage.
For a direct mail campaign, I tested two envelope versions for my client, Ministries Today.
Both had the same simulated red stamp:
“FREE REPORT ENCLOSED: DO NOT BEND.”
The only difference?
The tease copy on the outside.
That’s it.
The tease copy is type on the envelop with one objective: get the prospect to rip open the envelope with anticipation and curiosity.
The target audience was evangelical pastors and church leaders.
Here is the test:
Envelope A:
“A FREE gift for Christian leaders!”
Subhead: “No cost. No obligation. No strings.”
Envelope B:
“Billy Graham… Jack Hayford… Tommy Barnett…
Mario Murillo… David Yonggi Cho.”
Everything else was identical.
When I present this test in seminars, most marketers/experts guess the envelope with the word “FREE” won.
It didn’t.
Envelope B won by 36%.
That’s not a small lift.
That’s a meaningful revenue difference.
Why?
Because recognized names by the targeted audiences created curiosity.
Curiosity got the envelope opened.
Curiosity beat the word “FREE.”
This is why we test.
Assumptions are expensive.
Testing is profitable.
It’s profitable with digital.
It’s profitable with direct mail.
Action:
Are You Testing Your Direct Mail — Or Guessing?
If you’re spending money on direct mail without disciplined testing, you’re leaving revenue on the table.
At CDMG, we’ve tested over 10,000 direct mail and digital variables — and won 124 marketing awards in the process.
Small copy differences can produce major ROI swings.
Let’s find yours.
Step #1: Call Michael at 615-933-4647 or email him at [email protected].
Step #2: Get my book, The New Multichannel, Integrated Marketing: 28 Trends for Creating a Multichannel, Integrated Campaign to Boost Your Profits Now, and learn how to structure high-response campaigns.
Click HERE to order the book online.
You can also order it on Amazon, HERE.
Or get the audiobook version HERE, or on Kindle HERE.
You can also get an autographed version HERE or by phone at 615-814-6633 (M-F 10am to 3pm).
You can also send a check for $26.13 (includes shipping) payable to Media Specialists and send it to this address:
Media Specialists
1313 4th Ave N
Nashville, TN 37208
Test. Measure. Scale.
FAQs:
Why is envelope copy important in direct mail?
Envelope copy determines whether the mail piece gets opened. If the envelope fails, the letter and offer are never seen.
Does the word “FREE” always increase response?
No. In this test, an envelope listing recognized evangelical leaders outperformed a “FREE” offer by 36%.
Why did recognizable names outperform a free offer?
Recognized names created curiosity and credibility, which motivated recipients to open the envelope.
How important is testing in direct mail?
Testing is critical. Small variations in copy can dramatically impact response rates and ROI.
What elements should be tested in direct mail?
Envelope teaser copy, headlines, offers, personalization, format, and calls to action should all be tested.
About Craig Huey:
Craig Huey is the founder of Creative Direct Marketing Group (CDMG), an award-winning agency with 124 marketing awards. His team specializes in accountable multichannel marketing and disciplined A/B testing that generates measurable leads and buyers.
Unlock Explosive Growth with CDMG, Inc.
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In today’s fast-paced world, you need more than just an agency—you need a partner who drives growth, amplifies your brand, and delivers results that matter. That’s where CDMG comes in.
We’re not just another ad agency. We are a top advertising and marketing powerhouse specializing in driving real, measurable results and profits. Our award-winning team, led by marketing veterans Craig and Caleb Huey, is dedicated to supercharging your advertising efforts and transforming your business.
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Let’s talk. Call Michael Oppenheimer at 615-933-4647 or email [email protected] today.
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