The Nature Society used to raise money through a Stamp Fund where they would collect old stamps and sell them in bulk to stamp dealers. However, given the lack of information about this on their website, we believe they have discontinued this programme.
Postage Stamps (Used)
Blue Bins & Chutes
Recycle as Paper
Do not remove stamps from envelopes unless you plan to give them away. Small bits of loose paper get filtered out of the recycling system.
Recycle as you would any paper. More info here.
Buy or Sell
Have you just inherited a stamp collection or find your stamp collection no longer sparks joy?! For those with large collections or special stamps, there are people online buying and selling.