National Change of Address (NCOA)
National Change of Address (NCOA) is a process by which we verify residents or companies are located at the specific address you have on your mailing list. NCOA gives PostMark an opportunity to help you clean your list and keep it as up to date as possible. Considering at least 20% of the population moves every year it is critical to keep up with the changes.
Wafer Seals / Tabs for Self Mailers
Wafer Seals / Tabs for Self Mailers are stickers that keep mailers closed as they move through the postal equipment. All letter size mail that folds requires either wafer seals or glue dots be used. Self mailers are folded sheet(s) of paper that do not have any binding. This PDF shows how wafer seals must be applied based on the fold.