Some shipping label providers like Stamps.com offer a custom version of the label.


Here is a list of shipping label size and layout options for Stamps.com provider.


  • Normalor no value is specified: A 4” x 6” label will be generated.
    • For Critical Mails, this option generates labels for windowed envelopes.
  • NormalLeft: A 4” x 6” label will be generated on the left side of the page.
  • NormalRight: A 4” x 6” label be generated on the right side of the page.
  • Normal4X6: A 4” x 6” label be generated on a 4” x 6” page.
  • Normal4X45: A label for 4” x 4½” doc-tab will be generated.
  • Normal4x5: A label for 4” x 5” doc-tab will be generated.
  • Normal4x825: A label for 4” x 6” will be generated with a 2.25” doc-tab.
    • This option only applies to Critical Mails and Library Mails.
  • Normal6X4: A 6” x 4” label be generated on a 6” x 4” page. -This option only applies to Critical Mails.
  • Normal75X2: A 7.5” x 2” label on a 7.5” x 2” page.
    • This option only applies to domestic First Class or Priority packages.
  • NormalReceipt: A 4” x 6” label and receipt be generated.
  • NormalCN22[1]: A 4” x 6” label on 8.5” x 11” sheet with Customs Form CN 22 will be generated.
    • If ZPL or EPL is chosen as image type, a combined postage and customs CN 22 form is generated in a 4” x 6” layout.
    • With swsimv17 version of the interface, this layout will generate a “Combined Postage and Customs Form” to a APO/FPO or US Territory destination for the following service types: US-PM, US-FC, US-MM, US-PP/US-PS for any image type.
  • NormalCP72[1] [3]: A 4” x 6” label on 8.5” x 11” page with Customs Form CP 72 will be generated.
    • With swsimv14 version of the interface, this layout will generate a “Combined Postage and Customs Form” to a APO/FPO destination for the following service types: US-PM.
    • With swsimv14 version of the interface, this layout will generate a “Combined Postage and Customs Form” to a APO/FPO destination or US Territory for the following service types: US-PM, US-FC, US-MM, US-PP/US-PS.
    • swsimv13 and earlier will have no change in functionality and will continue to generate a 4” x 6” label and a separate Customs Form CP 72.
  • Normal4X6CN22: A 4” x 6” label on a 4” x 6” page with Customs Form CN 22 will be generated.
  • Normal6X4CN22: A 6” x 4” label on a 4” x 6” page with Customs Form CN 22 will be generated. This layout is not available for EPL and ZPL.
  • Normal4X6CP72 [3]: A 4” x 6” label on a 4” x 6” page with Customs Form CP 72 will be generated.
  • Normal6X4CP72 [3]: A 6” x 4” label on a 4” x 6” page with Customs Form CP 72 will be generated. This layout is not available for EPL and ZPL.
  • Normal4X675: A label for 4” x 6¾” doc-tab will be generated.
  • Normal4X675CN22 [1]: A label with Customs Form CN 22 for 4” x 6¾” doc-tab will be generated.
  • Normal4X675CP72 [1] [3]: A label with Customs Form CP 72 for 4” x 6¾” doc-tab will be generated.
  • Return: A 4” x 6” return label will be generated. Return labels do not have shipping date on them.
  • ReturnCN22 [1]: A 4” x 6” return label with Customs Form CN 22 will be generated.
  • ReturnCP72 [1]: A 4” x 6” return label with Customs Form CP 72 will be generated.
  • Return4X675: A return label for 4” x 6¾” doc-tab will be generated.
  • Return4x825: A return label for 4” x 6” will be generated with a 2.25” doc-tab.
  • Return6X4: A return 6” x 4” label be generated on a 6” x 4” page.
  • Return4X45: A return label for 4” x 4½” doc-tab will be generated.
  • Return4X675CN22 [1]: A return label with Customs Form CN 22 for 4” x 6¾” doc-tab will be generated.
  • Return4X675CP72 [1]: A return label with Customs Form CP 72 for 4” x 6¾” doc-tab will be generated.

Stamps.com Certified Mail form SDC-3510, SDC-3520, SDC-3530, SDC-3610, SDC-3710, SDC-3810, SDC-3820 and SDC-3910. ( See Appendix G – Best Practices to Print on Certified Mail Forms )

  • SDC3510
  • SDC3520
  • SDC3530
  • SDC3610 [2]
  • SDC3710 [2]
  • SDC3810
  • SDC3820
  • SDC3830
  • SDC3910
  • SDC3930

Envelope layouts include:

  • Envelope9 - Envelope #9 (3 7/8 x 8 7/8”)
  • Envelope10 - Envelope #10 (4 1/8 x 9 1/2”)
  • Envelope11 - Envelope #11 (4 1/2 x 10 3/8”)
  • Envelope12 - Envelope #12(4 3/4 x 11”)
  • EnvelopePersonal - Envelope Personal (3 5/8 x 6 1/2”)
  • EnvelopeMonarch - Envelope Monarch (3 7/8 x 7 1/2”)
  • EnvelopeInvitation - Envelope NCR Invitation (5 3/4 x 4 3/8”)
  • EnvelopeGreeting - Envelope NCR Greeting (8 3/4 x 5 3/4”)