Support us Fundraise Other ways to give Recycle your old stamps It doesn’t matter that the stamps have already been used or what class they are, by donating them to Support Dogs, you can raise vital funds for our charity. Simply follow these steps: 1 – Complete the form below to request a pre-paid envelope (for half a carrier bag full of stamps) or a larger box. We can also send a display box which is great if you are collecting as a group. 2 – Alternatively, call us on 0114 261 7800 3 – Start collecting your used stamps from letters, parcels and postcards, leaving a 1CM boarder around them 4 – Evenly pack your stamps into the pre-paid envelope we have sent you. You don’t need to worry about sorting your stamps, as that is done at the other end! 5 – Pop them in the post when they’re full.