Quote from: tearghoa on December 24, 2011, 05:18 pmThe DCN issue is not a non issue for those in the US, I can walk into my post office grab a stack of 100 off the shelf and walk out with them at 3am when no one is there. Then it is just a matter of applying the DCN sticker in addition to a $0.80 stamp with your normal postage.Also keep in mind you cannot use DCNs with a regular first class letter.Priority Mail or regular First Class parcels, yes.From the USPS website FAQQuoteThis service provides the date, time, and location of the delivery or delivery attempt. Delivery Confirmation can be used with:  Parcels (Letters not eligible) -  Priority Mail  Package Services Parcels - Includes Parcel Post, Media Mail, Bound Printed Matter (paid by permit imprint only), and Library Mail.  Standard Mail Parcels - must be less than 16 ounces and mailed at the electronic price.  Parcel Select - must be mailed at the electronic price