The decision was made after trials in stores in Yorkshire and Arundel launched at the start of the year. The two companies will work closely together to develop a tailored range for Snax24.
The chain's MD Bill Ahearn said: "Blueheath's online ordering system enables us to regulate purchases from suppliers more efficiently.
"Its service works in real time, we can place orders immediately without waiting for a rep to phone.
"We can also use the system to ensure store compliance on merchandising, pricing and promotions."