Can I mail die-cut postcards through USPS?

Mailing die-cut postcards is generally not recommended, because odd shapes can fall outside standard mail carrier machine specifications and risk damage or surcharges.

• The issue: automated sorting equipment expects standard rectangular sizes, so die-cut edges may snag or jam.
• Safer route: place die-cut cards inside an envelope so the mailer keeps a standard, machinable shape.
• Verify first: contact USPS directly to confirm whether your specific die-cut design meets mailable requirements.

When in doubt, mailing a standard-shaped postcard or an enveloped die-cut card is the most reliable choice.