The company launched its Luxe Business Cards in 2012, claiming to be the first digital printer to offer "super-premium" business cards, with just one fixed-size card available.
The extended range, targeted predominantly at small businesses, includes Luxe Notecards, Postcards and Minicards.
Using Mohawk superfine at 600gsm the whole range can be printed in four colours, with an optional seam of colour running through the centre layer of the card, and personalised down to individual cards.
Minicards measure 70x28mm while the postcards and notecards are 148x105mm.
Print runs start at 10 pieces with bulk orders available starting from £23.99 for 100 minicards and £19.99 for 10 notecards or postcards.
Moo.com director of marketing Paul Lewis said that since the release of Luxe Business Cards last year the division had been a "very fast growing area" of overall business.
"Those who are real lovers of branding quality have been crying out for more since we launched Luxe. It was a natural move to launch a suite of consistent branding and extend the paper stock across the new products," he added.
Lewis said that people were beginning to adopt old forms of communication such as invites and thank you cards and that Moo.com was hoping to harnass that with the launch of Luxe Notecards.
He added: "The humble thank you note is making a comeback and speaks volumes more than emails so this is about educating small businesses and helping them differentiate themselves over and above the standard printed products that people tend to use. We’re really hoping to fill a gap in the market."