Browse our wide selection of envelopes. Our collection of envelopes features several types including coloured envelopes, manilla envelopes, plain white envelopes, white window envelopes, bubble envelopes, document-enclosed wallets, padded envelopes and security envelopes. Envelopes offer a strategic advantage for businesses. They function as a branded touchpoint, fostering professionalism and brand recognition from the moment they land in a recipient's mailbox.