USP

Unique Selling Proposition (the term can be used interchangeably with Unique Selling Point). USP refers to the feature or advantage of a product that distinguishes it from others in the same product category and is emphasized in advertising messages about the product. 

Read also:

1. Social selling

2. Open rate

3. Emotional selling proposition 

Useful links:

https://pl.wikipedia.org/wiki/Unique_selling_proposition

https://mobiletry.com/blog/usp-unikalna-propozycja-sprzedazy

https://marketingdlaludzi.pl/co-to-jest-usp-unikalna-cecha-oferty-i-dlaczego-jest-to-wazne-dla-twojego-biznesu/

https://marketingibiznes.pl/e-commerce/unikalna-propozycja-sprzedazowa-twojego-biznesu/