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Tracking

Each postcard, letter, and check sent within the U.S. has a unique barcode that gets scanned by USPS as it travels through the mail stream. Lob then uniquely processes USPS mail scans along with additional information returned from their network of print and mail partners to provide a comprehensive set of mail tracking data. You can access this mail tracking data via webhooks that update tracking fields in each Print & Mail record.
Below is a breakdown of each mail tracking statuses and description:
  • Mailed - The mailpiece has been handed off to and accepted by USPS and is en route.
  • In Transit - The mailpiece is being processed at the entry/origin facility.
  • In Local Area - The mailpiece is being processed at the destination facility.
  • Processed for Delivery - The mailpiece has been greenlit for delivery at the recipient's nearest postal facility. The mailpiece should reach the mailbox within 1 business day.
  • Re-routed - The mailpiece is re-routed due to recipient change of address, address errors, or USPS relabeling of barcode/ID tag area.
  • Returned to Sender - The mailpiece is being returned to sender due to barcode, ID tag area, or address errors.

Tracking fields

They are available for all record types (Letter, Postcard, Check).
Field Name
Type
Description
Tracking Number
Text
If the mail is being sent as Certified or Certified Return Receipt, the tracking number will be here immediately upon creation. If the mail is Registered, the tracking number will appear here when it becomes available.
Tracking Status
Picklist
Last known tracking status. Values are In Transit, In Local Area, Processed for Delivery, Re-Routed, Returned to Sender, Mailed.
Expected Delivery Date
Date
Expected Delivery Date provided by the carrier.
Tracking Updated
Date/Time
Timestamp of the last tracking update was received.
Tracking Location
Text
The postal code in which the event occurred. Will be null for Mailed events.
Last modified 2yr ago