The North-East London firm described it as an “end-to-end” service.
Customers can choose from a palette of 28 different popular Colorplan colours selected by Baddeley, or specify one of the range’s 50 colourways if the required colour is not listed.
Envelopes are made in tuck or wallet styles, and with optional tissue lining.
Envelope sizes are C5, C6, DL and 140x190mm.
The envelopes can be printed using letterpress, die stamping, foiling or blind embossing, and the shop, accessed via the firm's website, allows customers to upload their bespoke design and artwork.
Commercial director Charles Pertwee commented: “Colorplan is a popular paper, and this service means customers can quickly order from drop-down lists, and use an online designer.”
He said Baddeley had chosen to standardise on 175gm across the board “for that extra touch of quality”.
"Our new portal provides high-quality, affordable, and made-to-order envelopes with vibrant colours. Suitable for all our printing methods."
He said that popular options included C5 in whites, reds and greens.
The minimum order quantity is 50, with tiered pricing according to quantity.
Separately, Baddeley Brothers has taken on two former employees from the shuttered Reflections Print Finishers. The firm employs 16 in total.
Baddeley Brothers’ origins date back to the mid-17th century, beginning as clockmakers and die makers for the pottery and jewellery industries in Staffordshire. The engraving side for the printing industry was established in London in 1859.