Quick Service Guide 507c
Meter Reply Mail
Meter stamps may be used to prepay reply postage on Express Mail; Priority Mail (when the rate is the same for all zones); all First-Class Mail cards, letters, and flats up to a maximum of 13 ounces; single-piece Media Mail and Library Mail.
The USPS provides free of charge the FIM (facing identification mark) and appropriate barcode to print on meter reply letter-size mailpieces. The guidelines on page two will help optimize the use of this format.
The following conditions apply (604.4.4.2):
Envelopes and cards formatted for meter reply mail on which the mailer failed to imprint a meter stamp are treated as basic BRM. Such mail is delivered after payment of postage and the applicable BRM per-piece charge (507.8.0).
Barcodes on letter-size pieces may be placed either in the address block or in the lower right barcode clear zone. The correct barcode could be a delivery point barcode, a ZIP+4 barcode (if the address is assigned a (unique) ZIP+4 code), or, in some cases, a 5-digit barcode (if the address is assigned a (unique) 5-digit ZIP Code).
All letter-size reply cards and envelopes (business reply, courtesy reply, and meter reply mail) provided as enclosures in automation First-Class Mail, Periodicals, and Standard Mail must meet the standards in 201.3.14.
For the specific DMM standards applicable to this category of mail, consult the DMM sections referenced above and the general sections within each DMM module.