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21X growth in 3 months: Inside Shout’s Amazon breakthrough

results

21x
Revenue
298k
Impressions
5.7x
Rank Boost
248
Influencers

Shout® grew monthly Amazon unit sales 21x over the campaign, from 49 units in March 2026 to 1,058 units by June 2026. Over the same 3 months, the brand's bestseller rank in Amazon's Odor and Stain Removers category improved 5.7x, climbing from #63,848 to #11,244. The product held a strong 4.8 star rating at campaign close. With sales velocity and rank compounding month over month, Shout® ended the campaign with sustained momentum on Amazon.

Stack Influence creators generated 298K impressions and 2.5K engagements for Shout® across 248 promotions, producing $4,730 in Earned Media Value. The campaign also delivered 108 testimonials, a 44% conversion rate from completed posts to authentic customer feedback.

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Shout® entered the campaign as an established brand on Amazon looking to increase visibility and traffic for its Pet Stain Remover Spray. The odor and stain remover category is crowded with legacy brands and low-cost competitors, making it difficult to stand out on keyword searches alone. Sales velocity was too low to move the product up the bestseller rankings, and the listing lacked the fresh social proof needed to convert new shoppers. Shout® needed a repeatable way to drive external traffic, authentic content, and purchase momentum at scale.

3-month campaign recap: 21x monthly Amazon unit sales (49 to 1,058/mo), a 5.7x bestseller rank lift, and 298K social impressions powered by 248 creator promotions.
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Engagement rate skyrocketed
Besides the influencers generating content for promotional channels and brand awareness we’ve been seeing that our engagement rate has been much higher – number of likes, comments compared to other influencer collaborations.
March 20, 2025
Pay influencers only in product
I’ve been working with stack influencers for five months. Instead of paying between $500 and $1,000 for one post, as you would with larger influencers, you give them a product of their choosing.
May 7, 2025
Unilever loves Stack Influence
Stack Influence is a cost-effective solution to run micro-influencer campaigns that abstracts out the hard bits for you, like influencer accumulation, managing influencers to make sure they complete their tasks, and compensation.
April 14, 2025
Innovative influencer program
Easy of use. Fast onboarding. Great team that is very educated. Helped us get a ton of micro influencers for our amazon products. It really helped us boost things. There was nothing we disliked about Stack Influence.
April 18, 2025
Connecting with influencers has never been easier
Easy to manage the influencers. I don't have to worry about reaching out to multiple influencers multiple times. Connecting with influencers is now more convenient than ever.
May 13, 2025
Stack Influence Partners with you
Stack Influence understands the ecom landscape and works hard to create unique solutions to generate sales and reviews for your products. Stack Influence also generates interest and gathers market intelligence about the products we are offering.
May 21, 2025
Helped grow our Amazon business
The program set up was very easy and it appears to be improving reviews and generating UGC for us. We are continuing to lean in as we do see Stack Influence increasing awareness and helping lift our organic ranking.
June 4, 2025
Stack helped my haircare brand grow on Amazon!
I found Stack while looking for a way to grow awareness for my independent hair care brand online, mostly on Amazon. Stack has proven to be very effective in getting great UGC and improving my organic seller ranking and online presence.
June 18, 2025
Great way to develop authentic user generated content
Stack influence puts your product in front of customers who create authentic user generated content. Its a great way to get real people to try your product and helping create brand awareness.
June 26, 2025
Stack is great
I have participated in many of these influencer programs, and Stack is the only one that has ever worked! I have burned a lot of cash on worthless programs. We crushed it with them. I am doing another program with Stack as we speak.
July 4, 2025
Effective platform at driving online brand awareness
It is reasonably priced, their team is very responsive, and it has helped us drive awareness of our e-commerce site. Stack Influence helps us increase online sales and general brand awareness.
July 23, 2025
By far the best product launch service I've used.
Stack Influence makes finding influencers an absolutely automated process. You basically don't even have to do anything after set up, they just roll in. Professional, easy to use platform that brings real results!
August 6, 2025
Amazing platform to scale Amazon focused UGC
Stack overall was a great experience from the content generation and scaling UGC content. The platform is extremely easy to use with a great interface for reviewing content, the content stats, downloading and using UGC videos, and viewing credits.
August 25, 2025
Promote products in volume on social channels
Stack allows us one arm of influencer marketing that can operate without excessive maintenance on our end. We get some content we can use and it helps push consumers to our ecommerce sites.
August 28, 2025
This is a solid marketing arm of our strategic growth
This is a very affordable marketing tool to grow a new product, and to also generate additional growth for an existing product. Stack takes a LOT of the workload off of our shoulders, and is giving us a completely new marketing avenue that we never had before.
September 12, 2025
Great customer service and quick results
We find that the team at Stack Influencer responds and sets up campaigns quickly. Their community brings the results we are looking for and then some. Stack Influence helps boost popularity of new products on instagram and bring new consumers to the product as
September 15, 2025
User friendly platform - multifuncional benefits
I like that you can direct your purchases not only to Amazon or to your own website but to other websites as well. As a company that also works with wholesale customers this is very helpful for us getting more sales to their websites to jumpstart our products/
October 3, 2025
Great Platform to Help Build Brand Awareness on Amazon
I find the platform to be a very efficient way to gift product to influencers that can support our Amazon business and help build overall brand awareness, which is becoming increasingly more important on the channel. It is highly scalable and looking forward
September 22, 2025
Exceptional Partner with Genuine Dedication
The staff at Stack Influence is incredibly prompt, kind, and always approach everything with genuine sincerity and effort. Their professionalism and dedication make them an exceptional partner, and we are truly happy to collaborate with them.
October 6, 2025
Useful tool
Overall, Stack Influence is a great service, especially for sellers looking for authentic, scalable ways to improve their brand presence on Amazon. The concept is strong — connecting brands with micro-influencers to generate social posts, build sales momentum,
September 29, 2025