About Featherpost With our complete range of mailers manufactured at our Milton Keynes site, Featherpost offers a truly comprehensive range of products for both high and low volume mailing markets. Being a privately owned company, we are able to offer a unique flexibility in our approach to supply and support which remains unequalled by our competitors. Utilising our parent company’s brand leading Sancell Bubble Film Cushioning and the highest quality Kraft outer paper, our range of mailers are suitable for all applications and markets.