Personalised direct mail has never been so effective as it is today where digital print technology makes the envelope specially addressed to you. Premium Postfast envelopes are at home with the latest digital print technology with its special features and laser window. Designed to work on all mailing inserting machines make this range the 'master of all mailing envelopes'. These envelopes have a handy gummed closure for quick and easy fastening. They are wallet opening; meaning that they open along their longer side.