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- They begged us to keep selling this bundle (after the sale ended)
They begged us to keep selling this bundle (after the sale ended)
The product development hack your competitors don't know...
Hey, Michael from AdSumo Digital here.
Your email list isn't just for sending discount codes and product announcements.
It's your most powerful product development lab hiding in plain sight.
Let me share what happened with one of our clients recently...
We created a special Valentine's Day bundle for them – combining their best-performing products with a modest discount.
The sales results were immediate and impressive, with their Valentine's Day emails generating thousands in revenue within days of launching.
But here's where it gets interesting...
After the promotion ended, something unexpected happened. Their customer service inbox filled with messages asking for the bundle. Not for the discount – for the actual bundle itself.
The lightbulb went off.
This wasn't just a successful promotion. They had accidentally discovered a product their customers actually wanted.
So they made a bold move: they added the bundle as a permanent product on their site at full price.
It quickly became one of their best-sellers and has generated substantial revenue since launch.
All from ONE EMAIL TEST.
This isn't some isolated incident. We've seen this pattern repeat across multiple brands:
A supplement company discovered their customers wanted a specific combination of products that they never would have put together without testing it first
A skincare brand found that bundling their "boring" essentials with their signature products significantly improved conversion rates
A home goods store learned that customers preferred functional collections over aesthetic ones – completely reshaping their product strategy
What these brands all discovered was simple but powerful:
Your email list is the perfect focus group that pays you.
Think about it:
These are your most engaged customers who already trust you
They vote with their wallets in real-time (no survey bias)
You can test multiple concepts without changing your website
The limited-time nature reveals true demand intensity
One client saw this firsthand with their plain text emails promoting specific product combinations. These simple, conversational emails consistently outperformed their designed campaigns and revealed exactly which product combinations resonated most with customers.
Here's how to leverage this strategy yourself:
THE BEST-SELLER BUNDLE Create a package of your 2-3 top products with complementary us
e cases. The slight discount is just the excuse – you're really testing if these products make sense together.
THE PROBLEM-SOLUTION BUNDLE Group products by the specific problem they solve rather than by category. "The Complete Sleep Kit" instead of "Bedding Bundle."
THE NEW CONCEPT TEST Use a bundle to test an entirely new product concept before investing in development. One brand tested a "subscription starter kit" that became the foundation for their entire recurring revenue model.

The beauty of this approach? Even if your test fails, you still generate revenue.
Instead of spending thousands on focus groups or risking inventory on unproven concepts, you're getting paid to do market research.
So stop thinking of your email list as just a sales channel.
It's your R&D department, your focus group, and your product validation tool rolled into one.
And unlike every other marketing channel, you own it completely.
Talk soon,
Michael
PS - If you run an Ecom brand and want to have a 15 minute strategy session with me, book a call here »
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