Sellina functionalities.
Discover the features that support B2B and B2C sales in one system
Sellina launches with 80–100% of the functionality a B2B or B2B+B2C company with a large product catalog needs. Below, you'll find a complete breakdown of features by store area—from pricing management to the merchant dashboard.
Price and tax management
B2B prices are rarely a single number – they depend on the customer, quantity, currency, and country of sale. Sellina handles this without additional plugins:
Controlling the display of net/gross prices depending on the user type
Handling complex VAT matrices for domestic and foreign sales
Currency conversion management – manual or automatic
Fixed price lists in currency, without conversion from the base price
Prices depend on the user group (price per customer group)
Prices depend on the quantity of the product purchased (tier pricing) in relation to the group
Full archiving of price change history (Omnibus Directive compliance)
Optional: individual price lists per customer via the Price Application
Promotions and marketing
Many types of promotions: special prices, quantity promotions, cart value promotions, discount codes, "Buy X get Y"
Generating promotions for selected products based on product attributes and parameters
Determining the duration of the promotion
Limiting promotions to selected customer groups
Generating unique discount codes with a report on their use
A module that records price history in accordance with the Omnibus directive
Login, registration and user account
Login with password reset option
Registration in two modes: B2C and B2B
Redirecting the B2B user to the account approval path
Possibility to disable B2C user registration
GUS / VIES validation on the registration form
Automatic allocation of a user to a group based on the selected registration form
Guest shopping (with the option to disable this option)
Login/Register when going to the cart or finalizing your purchase
Address management with the ability to set default addresses and custom names
Commercial documents module (B2B)
Favorites/shopping lists module
Optional: information about loyalty program points
Orders, History & Returns
Filter and sort your order history, with a search option
Tracking shipments from the list and order details
Submitting a complaint or return directly to your order
Fulfillment status per order line – for orders fulfilled in parts
One-click reorder
Submitting a return or complaint for closed orders, with the option to exclude a selected product from return.
Submitting a transport complaint
View the status of reported returns and complaints
Cart and checkout
Mini-basket available from the entire website
Adding/subtracting items directly from the cart
Adding large quantities of products at once (over 100 rows)
Upsell/cross-sell module when going to the cart
Merging carts after logging in – the customer does not lose the cart from a non-logged-in session
Validation of fields on checkout (e.g. phone number vs. country)
Select a shipping/billing address from the list or add a new one
Comment on the order and selection of the expected delivery date (B2B)
Quickly view the products in your order without leaving checkout
Import of the entire cart via CSV or XLSX file, with error handling (missing items, insufficient quantity)
Payments
Fast transfers, Pay by Link, BLIK – via PayNow and iMoje
International Payments – Stripe and PayPal
Bank transfer and cash on delivery
Deferred payment (X days) and payment with credit limit/trade credit
Using loyalty points to pay (up to a certain percentage of the transaction value)
Limiting the availability of payment methods by customer group, delivery method and basket value
Automatic or manual blocking of deferred payments after the deadline has passed
Delivery and logistics
Courier and pallet shipments
InPost parcel lockers, DPD pickup points
Personal pickup from multiple points/locations
Select your preferred delivery date
Delivery price determined per method, with a cost matrix depending on weight (international shipments)
Limiting the availability of the delivery method according to the size and value of the basket
Defining shipping per country
B2B functionalities
This is a set of functions that most often determine whether the platform will actually handle wholesale sales – not just a store with the "B2B" note:
B2B dashboard – account manager details, credit limit balance, list of recent orders and documents, banner dedicated to a group of users, quick access to recently purchased products
Multi-level price list management (described above)
Shopping lists/multiple baskets – fixed product lists instead of buying from scratch every time
Multi-user/sub-account module for multi-branch companies, with an advanced set of permissions
Assigning a credit limit and payment due date to a specific customer
Assigning a sales representative to a client
Blocking billing address changes – protection against billing errors
B2B customer acceptance path with assigning commercial terms
Customer blocking – manual or automatic, based on overdue invoices
Upsell for B2B customers when going to the cart
Commercial documents – invoices, corrections, advance payment invoices, WZ/WM, with the presentation of documents after the deadline
Have questions, let's talk.
Let's check together if Sellina will support your sales model.
Merchant panel
Sellina does not leave the salesperson outside the system – they can serve the customer from the administration panel:
Log in as a customer to fill your cart or make a purchase on your behalf
Viewing the list of your own customers and assigned orders/baskets
Controlling the assignment of a salesperson to a customer
Powers divided between the salesperson and the sales department manager
Quick export of filtered customer lists
Change of customer's terms and conditions
Placing orders for the customer from the administration panel
Integrations with CRM systems
Offer module – creating, sending and negotiating personalized offers directly in the system, with easy conversion of the offer into an order
Product card and catalog
Simple and configurable product management
Managing inventory and multiple warehouses simultaneously
Automatic switching of products between warehouses when stocks run out, with priority given to shipping time
Defining shipping times per warehouse or per product in a given warehouse
Presentation of availability by number and color, with the option to hide the exact number of pieces
Customer's choice of warehouse on the product card (with variable price per warehouse)
Checking product availability at stationary points
Purchase in fixed multiples (e.g. every 4 pieces) and min/max limits for items in the basket
Photo gallery with zoom and the ability to embed video
"Ask about product" form and sign up for availability notification
Displaying the price per unit or other unit of measure for packaged products
Product comparison
"Order by XX:XX, we'll ship today" module
Search and category page
Quick search with Elastic Search
Category tree with navigation to related pages
Filters that narrow down the list of products according to assigned criteria and features
Sorting products in the selected order
Presentation of products in tiles on the category page, with pagination
Search results page matching the phrase you entered
Category description for SEO and a graphic banner above the product list
AI modules
Generating a product description based on its attributes – useful for large catalogs where writing descriptions manually is not cost-effective
Loyalty program
Collecting points for purchases
Redeem points for purchases up to a specified percentage of the cart value
Configurable point → zloty converter
SEO and analytics
Page structural markup (H1–H6 headings)
Full metadata support for each subpage and global data
Ready sitemap and editable robots.txt file
Extensive data layers – standard Google events and custom events
Automatic redirects (key when migrating from another platform)
Integration with Google Search Console, Google Tag Manager and Google Analytics
Most frequently asked questions
Will Sellina support my sales model if I combine B2B and B2C?
Yes. The system recognizes customer type at the registration stage and differentiates pricing, payment, and shipping without building two separate stores. More information can be found on the Sellina website – B2B and B2C e-commerce system.
Can I add functionality that is not on this list?
Yes. The list above includes features available in the base version (out-of-the-box). We evaluate features specific to your process as part of the Pre-Implementation Analysis.
Can B2B and B2C functionalities be enabled independently?
Yes. You can start with B2C sales and add B2B support later (or vice versa) without migrating to another platform.
Can I see these features in action before making a decision?
Yes – schedule a demo during which we will show you the functionalities that suit your sales model.
Can the system automatically move customers to higher discount groups once a turnover threshold is reached?
Yes - our dedicated team is responsible for this process Price App, which analyzes purchase history in real time and manages discount policies. This powerful loyalty tool operates fully automatically, reducing the workload of your sales department.
How does it work in practice with the Price App?
• Dynamic Discount Groups: The system monitors a customer's turnover over a period of time you define (e.g., month, quarter, year). Once a threshold is exceeded, the Pricing Application immediately changes the pricing parameters for that customer.
• Nudge Mechanism (Motivational): After logging in to Sellina, customers receive a precise message: "Your purchases this quarter total PLN 8,500. Spend another PLN 1,500 and you'll automatically upgrade to the Premium discount level (7% off everything)." This significantly increases the average basket value.
• ERP independence: Crucially, these thresholds and rules can be defined exclusively in the Pricing Application. You don't have to overhaul your ERP system to implement a modern loyalty policy.
• Omnichannel Consistency: The new discount that the customer has "earned" through their purchases in the online store is also immediately available for orders placed offline (e.g. at a merchant or in a stationary point), provided that these channels use the Price Application as their source of truth.
• Benefits for your business: Instead of manual analyses in Excel and manual changes to groups in the system, you get an automated system that "monitors" your customers' loyalty and encourages them to make larger purchases.
Check out what it looks like in practice
Schedule a demo to see how Sellina's functionalities work, tailored to your sales model.
Michał Kozik, Head of Design and Strategy / co-CEO