Does Express Mail require special packaging?

[Emerald_Door]

The title says it all. 

[Pantlandia]

No. We send out express all the time in regular boxes. They have stamps and/or labels to mark it Express at the post office (unless you're printing your own labels, then it will say Express on the label).

[Deleted]

Only rules is you can't use Priority packaging to send it Express.

[Emerald_Door]

Thank you, both!

[Desire]

At the PO or online Priority, it is usually white with RED lettering on the envelope or box, Express uses White with Blue lettering, BUT the new Express do say PRIORITY MAIL EXPRESS on them so it does get confusing.  They should not do that.

Here is one of them that has both names on it for Express Mail:
store.usps.com/store/browse/productDetailSingleSku.jsp?categoryNavIds=catGetMailingShippingSupplies%3AsubcatMSS_E%3AsubcatMSS_E_Free&categoryNav=false&navAction=push&navCount=16&productId=P_EP_13_F&categoryId=subcatMSS_E_Free

[Emerald_Door]

Thanks!