Nadia Petrov Customer Education Lead at 4OVER4.COM
Nadia is our customer education voice, built from the knowledge of our production team, with over 20 years in printing.
Question
Does EDDM postcard size affect postage cost?
Answer
Yes, size directly affects EDDM postage because it determines whether your piece is classified as a letter or a flat. Letters get the lowest EDDM retail rate, and flats cost more per piece.
| Class | Example size | Cost |
|---|---|---|
| Letter | 6.5" x 9" and similar smaller sizes | Lowest EDDM rate |
| Flat | Larger formats up to 12" x 15" | Higher per piece |
Both are far cheaper than addressed first-class mail, but on a large route mailing the per-piece difference adds up fast, so it is worth confirming which class your dimensions land in before you print.
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