Under the scheme, Post Office customers will get a card on which members can save up to £1,000. The funds will remain locked until 1 November after which it can be used as a debit card with participating retailers.
Michelle Walsh, marketing director of The Gift Voucher Shop, which is handling the product, says the card is being launched with a women's press campaign. It will run this month.
The Post Office follows in the footsteps of Argos Retail Group which set up its own Christmas savings card in March last year.