Implementation of Sellasist
A professional Sellasist implementation is the way to automate your sales processes. We take care of the technical integration of the system with Amazon, Allegro and your own online shop, which lets you automate logistics and the flow of documents. With the right configuration you avoid errors in your stock levels and gain a stable foundation for scaling your business safely on new markets.

What does the Sellasist implementation involve?
The scope of our work
- Synchronisation of sales channels – we connect your marketplace accounts and your online shop into a single system.
- A central warehouse – we build a product database with automatic synchronisation of stock levels and prices across all markets, so you always have up-to-date data on product availability.
- Shipping automation – we integrate couriers, making it possible to dispatch parcels in bulk and print waybills with a single click.
- Automated tasks – we design rules that change statuses, print documents and notify customers without any involvement on your part.
- Implementation of the WMS module (warehouse management system) – we set up barcode scanner support in order to minimise packing errors.
- Electronic invoice flow – we activate processes that issue sales documents automatically and distribute them to your customers and to your accounting team.
- Integration with ERP systems and wholesalers – we integrate the system with your inventory software or with your suppliers’ files.
Total Cost:
The total cost of the implementation depends on the scale of your business (among other things, how many sales channels you have and how large your product portfolio is), on the level of automation and on your individual needs.
What does our Sellasist integration look like step by step?
During the implementation work we focus on building a stable architecture for your sales and on eliminating unnecessary manual operations.

Step 1. Consultation and gathering your needs
We start by getting to know the specifics of your company. We talk about your current distribution channels, your work with couriers and your document flow. On that basis we select the Sellasist modules that will improve the day-to-day running of your company most effectively.

Step 2. Audit and process design
We analyse your warehouse resources and the way data flows between your systems. We identify the hold-ups that slow dispatch down and draw up a new, optimal scheme for the order path – from the moment a payment comes in through to the automatic generation of the shipping label and the sales documents.

Step 3. Integration, testing and implementation
At this stage we move on to the implementation itself. We connect your shop and your marketplace accounts to the Sellasist panel, set up the automation rules and verify that stock synchronisation is correct. We run operational tests in order to guarantee that the system works properly.

Step 4. System handover and post-implementation support
We show you how to use the new tools and warehouse modules effectively. Once the system goes live, we supervise the automation together with you for the first few days. As part of our post-implementation support we optimise the settings so as to give your business the highest possible performance.
Who do we build integrations for?

Manufacturers
You have a great product, but neither the time nor the resources to take care of growing your sales. Your passion is manufacturing, not fighting algorithms.

Importers / Private Label Brands
You import products in order to build a strong, profitable position on marketplaces under your own brand. You are looking for a partner who will help you avoid costly mistakes along the way.

Distributors
You have had enough of destructive price wars and minimal margins. You are looking for a way to increase profitability and to diversify your sales.
See success stories
Why is it worth working with us?

An experienced e-commerce team
Your implementation is handled by a team of experienced specialists who have spent years working in online sales and delivering professional automation for market leaders. Our expertise lets us squeeze the maximum out of the system and eliminate technical problems before they have a chance to appear. You are putting your project in the hands of people who know e-commerce inside out.

Expert, not a call centre
We guarantee direct contact with the implementation specialist who handles your project and takes responsibility for your system. Instead of waiting to be put through to a call handler, you get fast, substantive support from the person who actually implements your solutions.

Profit, not just revenue
We concentrate on what actually stays in your pocket. By implementing an integrator we clearly reduce the cost of processing every order and minimise mistakes during packing. We build a stable foundation for a highly profitable business that earns thanks to operational efficiency.

We diversify your sales
We help you move beyond a single channel without creating chaos in your stock. Thanks to precise synchronisation across many marketplaces you build a stable company, resistant to sudden changes in the terms of individual platforms. Sellasist becomes the safe link that keeps all your markets in full balance.

Selling without legal and tax pitfalls
Trading on new markets is a labyrinth of regulations. We make sure that your invoices under the VAT-OSS scheme are issued flawlessly and that recycling fees (LUCID, WEEE) stay under strict control. We take care of the technical labyrinth of regulations, allowing you to focus purely on selling.

You get your time back
Mistakes made at the start mean a loss of time and money that is hard to avoid when you are working on your own. We take on the entire technical risk and the responsibility for the configuration. That gives you peace of mind and the space to do what you do best: create great products and grow your brand.
What do clients think of our marketplace agency?
A highly effective company with extensive experience and a really positive attitude. I recommend them.
Bernard Bocian
Sales Director at Meester Group.
We wholeheartedly recommend RYS! Excellent management of our Amazon and eBay accounts. The team has deep, reliable knowledge and uses effective tools that have significantly helped grow our business. Most importantly, they are always ready to help, even with issues that go beyond their standard services. Their extensive industry experience is clear in every aspect of our partnership. We definitely recommend them!
Mateusz Najder
CEO at Najder
Complete professionalism from day one, meaning you see results very quickly. Working with Zosia is a pure pleasure. I recommend them without hesitation! 🙂
Karolina Helemejko
CEO at Bio EKOS
Great communication and excellent collaboration right from the start. We saw results almost immediately. They have my highest recommendation!
Filip Kurdziel
CEO at Parkiety Kurdziel
A very reliable and professional company. Great communication and advice, and most importantly – our goals are 100% met exactly as planned. Our sales numbers are growing month by month. DEFINITELY RECOMMEND. Zofia, Wojciech – thank you!
Bartłomiej Cholewa
Marketing Director at Lakma
Our partnership with Raise Your Sales is heading in a very good direction. Their communication, knowledge, and reliability are at a high level. These guys really know their stuff. We look forward to a long-term relationship and continuous growth. For anyone who is undecided, it's a firm YES – they are well worth it! 🙂
Arkadiusz Wierzbiński
CEO at FamilyMeble
A very good, reliable company. They really know their stuff, and it is definitely worth using their services. Product uploads, advertising – everything is handled so professionally that you simply couldn't do it on your own.
Jakub Dłużyński
CEO at Zatechs
We started out on Amazon, but over time, we expanded to eBay, Kaufland, and Allegro. Everything runs quickly, accurately, and professionally. Communication is great; they always answer my questions and help whenever needed. I sincerely recommend working with Raise Your Sales.
Sebastian Dyga
CEO at MilionMebli
Clients who trusted us:




















Frequently asked questions (FAQ)
Sellasist is a versatile e-commerce integrator that makes it possible to manage sales on many platforms at the same time, effectively. The system acts as a central operational hub, connecting your online shop with marketplaces such as Allegro, Amazon, eBay and Empik. Thanks to advanced integrations with couriers and with accounting and warehouse systems, Sellasist lets you control the whole process – from the moment an order comes in, through warehouse management (WMS), all the way to dispatch, and all of it without having to log in to several panels.
The right configuration is a guarantee that the system will steadily support your growth instead of generating extra work. A professional implementation delivers:
- Automation of repetitive processes – you get back time that you and your team can devote to planning strategy and introducing new products.
- Exemplary customer service – lightning-fast parcel processing and automatic notifications build trust and positive ratings on the sales platforms.
- Safe stock levels – precise, real-time synchronisation of your inventory rules out the risk of selling goods that are physically missing from the shelf.
- Price and listing management – you gain the ability to edit price lists and descriptions in bulk across all markets at once, from within a single tool.
- Fewer errors and lower costs – automating the flow of data protects you from costly human mistakes and lets you optimise the cost of handling orders.
- Smooth invoice flow – the system issues sales documents on its own and delivers them to buyers or to your accounting office.
The monthly cost of using the platform depends on the subscription package you choose, matched to the scale of your sales. The system has a very transparent billing model, which lets you predict your fixed software spend regardless of how many channels you connect. Sellasist offers a free trial period, thanks to which you can test what the system can do in practice. You will always find the exact, most up-to-date rates in the price list on the official Sellasist website.
Let's talk about growing your sales across marketplaces!

Do you need help with marketplaces?
Amazon
Unlock the potential of the world’s largest e-commerce platform. We will help you successfully enter new markets and build a strong advantage over your competitors.
Allegro
From the first audit, through training your team, to full management of the account and the advertising – we match the scope of our cooperation to the stage you are at. Choose the solution for your business:
eMAG
Expand your business to Romania, Bulgaria, and Hungary. We will guide you through the whole integration process and take care of your ongoing business development.
eBay
Reach millions of active buyers worldwide. eBay is your gateway to the massive markets of the UK and the US. We will set up your account and optimise it daily to build a strong international presence.

Kaufland
We know the Kaufland Marketplace system inside out. We know how to optimise accounts and advertising budgets. See what we can do for your brand:
Other marketplaces
We will introduce your brand to platforms specialised in your industry and to local leaders – where your customers actually are.
- Cdiscount
- bol.com
- OTTO
- ManoMano
- and many more…











