USPS Shipping API Service ID Values

Appendix A – RateV3 and RateV4 Class ID and MailService response values

Notes:

  • “{0}” in the chart denotes a variable depending on the scheduled delivery date calculation between the origin and destination ZIP Codes. Possible values: o “1-Day” o “2-Day” o “3-Day” o “Military” o “DPO” o “ “ – Special characters (e.g. ™, ®) are returned in their HTML form. For example, “®” is returned as “®

Class ID – MailService
0 – First-Class Mail® Large Envelope
0 – First-Class Mail® Letter
0 – First-Class Mail® Parcel
0 – First-Class Mail® Postcards
1 – Priority Mail {0}
2 – Priority Mail Express {0} Hold For Pickup
3 – Priority Mail Express {0}
4 – Standard Post®
6 – Media Mail®
7 – Library Mail
13 – Priority Mail Express {0} Flat Rate Envelope
15 – First-Class Mail® Large Postcards
16 – Priority Mail {0} Flat Rate Envelope
17 – Priority Mail {0} Medium Flat Rate Box
22 – Priority Mail {0} Large Flat Rate Box
23 – Priority Mail Express {0} Sunday/Holiday Delivery
25 – Priority Mail Express {0} Sunday/Holiday Delivery Flat Rate Envelope
27 – Priority Mail Express {0} Flat Rate Envelope Hold For Pickup
28 – Priority Mail {0} Small Flat Rate Box
29 – Priority Mail {0} Padded Flat Rate Envelope
30 – Priority Mail Express {0} Legal Flat Rate Envelope
31 – Priority Mail Express {0} Legal Flat Rate Envelope Hold For Pickup
32 – Priority Mail Express {0} Sunday/Holiday Delivery Legal Flat Rate Envelope
33 – Priority Mail {0} Hold For Pickup
34 – Priority Mail {0} Large Flat Rate Box Hold For Pickup
35 – Priority Mail {0} Medium Flat Rate Box Hold For Pickup
36 – Priority Mail {0} Small Flat Rate Box Hold For Pickup
37 – Priority Mail {0} Flat Rate Envelope Hold For Pickup
38 – Priority Mail {0} Gift Card Flat Rate Envelope
39 – Priority Mail {0} Gift Card Flat Rate Envelope Hold For Pickup
40 – Priority Mail {0} Window Flat Rate Envelope
41 – Priority Mail {0} Window Flat Rate Envelope Hold For Pickup
42 – Priority Mail {0} Small Flat Rate Envelope
43 – Priority Mail {0} Small Flat Rate Envelope Hold For Pickup
44 – Priority Mail {0} Legal Flat Rate Envelope
45 – Priority Mail {0} Legal Flat Rate Envelope Hold For Pickup
46 – Priority Mail {0} Padded Flat Rate Envelope Hold For Pickup
47 – Priority Mail {0} Regional Rate Box A
48 – Priority Mail {0} Regional Rate Box A Hold For Pickup
49 – Priority Mail {0} Regional Rate Box B
50 – Priority Mail {0} Regional Rate Box B Hold For Pickup
53 – First-Class Package Service Hold For Pickup
55 – Priority Mail Express {0} Flat Rate Boxes
56 – Priority Mail Express {0} Flat Rate Boxes Hold For Pickup
57 – Priority Mail Express {0} Sunday/Holiday Delivery Flat Rate Boxes
58 – Priority Mail {0} Regional Rate Box C
59 – Priority Mail {0} Regional Rate Box C Hold For Pickup
61 – First-Class Package Service
62 – Priority Mail Express {0} Padded Flat Rate Envelope
63 – Priority Mail Express {0} Padded Flat Rate Envelope Hold For Pickup
64 – Priority Mail Express {0} Sunday/Holiday Delivery Padded Flat Rate Envelope

Appendix B – IntlRate and IntlRateV2 Service ID and SvcDescription response values

Service ID – SvcDescription
1 – Priority Mail Express International
2 – Priority Mail International®
4 – Global Express Guaranteed® (GXG)**
5 – Global Express Guaranteed® Document
6 – Global Express Guaranteed® Non-Document Rectangular
7 – Global Express Guaranteed® Non-Document Non-Rectangular
8 – Priority Mail International® Flat Rate Envelope**
9 – Priority Mail International® Medium Flat Rate Box
10 – Priority Mail Express International Flat Rate Envelope
11 – Priority Mail International® Large Flat Rate Box
12 – USPS GXG Envelopes**
13 – First-Class Mail® International Letter**
14 – First-Class Mail® International Large Envelope**
15 – First-Class Package International Service**
16 – Priority Mail International® Small Flat Rate Box**
17 – Priority Mail Express International Legal Flat Rate Envelope
18 – Priority Mail International® Gift Card Flat Rate Envelope**
19 – Priority Mail International® Window Flat Rate Envelope**
20 – Priority Mail International® Small Flat Rate Envelope**
21 – First-Class Mail® International Postcard
22 – Priority Mail International® Legal Flat Rate Envelope**
23 – Priority Mail International® Padded Flat Rate Envelope**
24 – Priority Mail International® DVD Flat Rate priced box**
25 – Priority Mail International® Large Video Flat Rate priced box**
26 – Priority Mail Express International Flat Rate Boxes
27 – Priority Mail Express International Padded Flat Rate Envelope