Rentable E-commerce System: v5.51.0
The latest version of Sellvio, v5.51.0, further enhances the system's flexibility, security, and administrative capabilities. New features include expanded customizable product list sorting, advanced billing options, anti-spam protection, and detailed guides for setting up GTM and GA4, all contributing to smoother operation.
Default product list sorting
The latest version introduces new options for setting the default order of products. From now on, products can also be sorted by their product code in ascending or descending order. In the admin panel, it is possible to set this new sorting option as the default, while on the visitor-facing side, visitors can continue to sort the products according to their preference.

This feature allows merchants to control product display according to internal logic or inventory management, while providing customers with clearer and more easily navigable product lists.
Számlázz.hu updates
In the latest Sellvio version, the Számlázz.hu integration has been expanded with new features that simplify invoicing processes and increase flexibility:
- Invoicing as VAT-exempt – it can be set for the online store to handle invoices as VAT-exempt, so the system automatically issues invoices according to the applicable tax rules.
- Choice of paper or electronic invoice – administrators can select whether invoices are sent as paper or e-invoices.

These improvements reduce administrative burdens while ensuring full compliance with legal regulations and customer requirements.
iCenter update
A new setting is now available in the iCenter integration, allowing control over the synchronization of category descriptions. When enabled, the system will not overwrite existing category descriptions, while new category descriptions from iCenter will continue to be received.

This enhancement allows the online store to preserve its unique category descriptions while still automatically updating new content from the integrated system.
Anti-spam protection on contact forms
To protect against unwanted, spam-like messages, the new version introduces an anti-spam mode. This feature automatically filters suspicious messages, ensuring that only genuine and relevant messages reach the administrators. The system uses intelligent algorithms capable of detecting mass, repetitive, or automated spam messages, thereby reducing administrative burden and enhancing the security of the online store’s operations.
GTM and GA4 setup guide
Thanks to the update, the Sellvio administration interface now includes detailed, step-by-step guides for setting up Google Tag Manager and GA4. The instructions walk users through creating a GTM account and container, placing the head script, and configuring GA4 event tags and e-commerce activation rules.

This significantly simplifies the setup process, allowing administrators to integrate tracking quickly and accurately, while ensuring that data collection remains precise and up to date.