Fulfilling Chistmas card sales

It's early to be thinking of Christmas, I know, however I'd be grateful for any suggestions of efficient, not too expensive fulfilment houses who are able to handle Christmas card orders by post, telephone and email. The volume of sales last year (over 3,000 orders) is too great to bring the operation in-house, allied to the fact that since moving offices we have no space available to site a sales operation.

Any recommendations are most welcome.

Many thanks.