Sending Parcels for Charities 15 January 2019 at 5:02PM in Charities

Leatherhead_Steve

I've recently starting working at a local charity where my work includes sending a number of parcels of various shapes, sizes and weights, mainly for EBay. I had no idea how expensive sending parcels can be and was told that none of the big parcel delivery companies appear to make this available free of charge (do they not get tax concessions?).
Does anyone know of any delivery companies that do allow free posting for charities?
This is my first MSE posting and I appreciate any help you can give, thanks