

25″ in thickness and it becomes a “postal flat”. The next size up is “letter mail” – that is small roughly the size of a letter. To the post office a postcard is the smallest item of mail, and fits within certain size requirements. But it was already a existing type of mail (saturation mail – flat size). It was marketed directly to the small business public alongside a nifty tool. EDDM Mailers are “Postal Flats”Įven when EDDM was first started it wasn’t anything new. Now, if you really want to make a truly custom piece that fits your needs and meets all the EDDM requirements, then you’ll need to understand what the Post Office wants.

The upshot is the common, everyday print sizes that qualify: Eligible EDDM Sizes are: We’ll dig into it a little further down in this article. Explaining eligible EDDM sizes and requirements is actually somewhat complicated.
