Majestic Wine is to reduce the minimum order for online customers from 12 to six bottles.
Customers will be able to order a mixed case of six bottles in-store, by telephone or online from tomorrow.
They will be delivered, anywhere in mainland UK, and the service is free if the order comes to £40 or more.
The wine warehouse reduced its minimum order from 12 to six for in store customers in 2009 and has attributed sales growth since in part to the move.
Majestic chief executive Steve Lewis said: “Our minimum purchase was reduced in-store to six bottles in September 2009 and we are delighted that we can now offer this online too.
“It is an exciting change, I think it’s important that our delivery proposition evolves to suit the needs of online consumers.”
The retailer launched a mobile version of its website last month.
The 181 store retailer will update the market on its preliminary results of the year next Monday.