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Case Studies

For more than 16 years, we have been helping our clients achieve the highest possible profits from their online sales by providing services in the areas of: Google Ads, SEO, Facebook Ads, content marketing, web analytics, conversion optimisation, video marketing or marketplace marketing. As a Google PREMIUM partner, we specialise in online shop conversion marketing.

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This is no joke! We started activities on April 1 and after 4 months recorded a 2.5-fold increase in revenues from Microsoft Ads!
We have been cooperating with Microsoft Advertising as a Channel Partner for another year and we are convinced that our partnership is the b...
cs en marko
Your campaigns will no longer be like diamonds in the rough. case study
Marko is a Polish jewellery shop. It offers a very wide range of products, from gold and silver jewellery to devotional items and watches. T...
It’s not magic! How the bookstore discovered the power of Microsoft Advertising thanks to Sempai
Is it worth looking for new advertising channels on the Internet? Always! We started with this assumption by establishing a partnership with...
cs en carsmile
Sempai & Carsmile – our way to success in hard times
The cooperation between Sempai and Carsmile Carsmile is Poland’s first and largest virtual car showroom that allows you to use your car wi...

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Sempai's specialists run our campaigns in the Google Ads and Facebook Ads environment in accordance with best practices, achieving ambitious ROI levels. That is why we give Sempai references as a recommendable professional partner, specialising in paid campaigns and implementing the latest solutions in the field.
Paweł Grzebyk
Vice President of the Management Board of DeeZee
The main challenge faced by the agency was to increase traffic to the website and build the visibility of the shop in Google search. Our example shows that Sempai definitely knows how to win the battle for search engine visibility in one of the most competitive e-commerce industries. This is why I confidently recommend Sempai to result-oriented shops.
Ewa Stasieńko
Manager of the Deichmann online store
Just as E.ON Polska fuels Warsaw with good energy, so does Sempai Agency ensure the high visibility of our website in Google search results. Since 2017, Sempai's specialists have been significantly improving our position in organic search results, increasing traffic and website popularity. We strongly recommend their services.
Dominik Marzec
Digital Manager E.ON Polska
For us, Sempai is the undisputed leader in comprehensive online marketing. Their experts have been supporting our team since 2015 in three search engine marketing channels, including: SEO, PPC paid campaigns and content marketing.
Hubert Górecki
President of the Management Board of Cocolita
Since 2009, when we entrusted Sempai with running Google Ads campaigns and optimizing our website for the Google search engine, our store has been systematically increasing revenues. Sempai stands for efficient communication, support at every stage and clear rules of cooperation.
Jarosław Rękas Co-founder
Teaming up with Sempai was one of the best decisions Carsmile has made in 2019. The agency's actions helped to reduce the overly high CPA and double the number of leads! If you are looking for a professional and expert partner in digital marketing, you could not have come to a better place.
Grzegorz Wojciechowski
Carsmile Marketing Director
The support we receive from the mentor is crucial to our online activities. In our contact with Mr Adam, we appreciate the openness and willingness to share practical knowledge, which brings us closer to achieving our goals. As a result, paid advertising campaigns are an important part of Zepter's online brand presence.
Tijana Balaban
Zepter International Poland Marketing Manager
To further strengthen our position in the market, we partnered with Sempai Agency in August 2022. The decision turned out to be spot-on! We have already recorded a significant increase in scale since month 1, while maintaining our target efficiency. Our cooperation with the Sempai Agency to date is rated 5+ and we hope it will remain so!
Radosław Cetnarowicz
Member of the management board of Gandalf Sp z o. o.

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