EasyPost supports tracking both for labels purchased through it and for separately created Trackers. It is not necessary to assume label purchasing is required for every tracking integration. Trace is a tracking-data and shipment-record API without shipping-label purchasing.
A separate tracking layer may fit a team with an existing shipping workflow, but that alone does not make migration worthwhile. Compare your actual tracker lifecycle, carrier results, receiver recovery and operating costs.
Separate shipping operations from tracking evidence
If your application needs rating and label purchasing together with tracking, replacing the shipping layer with Trace would remove required functionality. Keep the shipping provider and decide whether a separate tracking projection adds enough value to justify another integration.
If you already have carrier numbers from another system, evaluate the standalone tracking contracts on both sides. Trace offers account-owned shipment records with order references and observed scan history. It does not provide carrier contracts, shipping labels, address-validation APIs or a delivery-claims product.
| Decision | Trace API | EasyPost |
|---|---|---|
| Labels and shipping rates | Not provided | A shipping API; retain it if these operations are required. |
| External tracking number | Direct lookup or owned record, subject to source availability | The official Tracker reference supports directly created Trackers. |
| Lifecycle identity | A new Idempotency-Key can create a separate parcel cycle | The reference documents duplicate-Tracker handling for repeated code/carrier pairs. |
| Events | Owned observed events and explicit timezone limitations | Tracker history contains tracking_details supplied through its contract. |
| Receiver verification | Trace raw-body signature and timestamp checks | Official webhook documentation describes HMAC validation and other authentication options. |
| Choosing a provider | Qualify matching histories, failures and workflow costs | Qualify the same parcel cohort and required carrier features. |
Evaluate the complete workflow with concrete examples
Example one: your warehouse already buys every label through EasyPost. Reusing the associated Tracker may keep shipping and delivery references simpler. Trace is worth testing only if a separate order-linked projection or its handling of source limitations improves your application enough to justify the work.
Example two: a platform receives tracking numbers from many sellers, including labels bought elsewhere. Both approaches should be evaluated for those external numbers. Record verified-history availability, carrier mapping and stale/error behavior rather than assuming a standalone path is missing from a shipping API.
Example three: a returns or replacement workflow reuses a tracking number. Identity and duplicate handling matter. Save a record for the actual parcel cycle and confirm how each API treats repeated code/carrier combinations before merging events into a buyer timeline.
Preserve Tracker references during a migration
Keep the EasyPost Tracker ID, carrier number, carrier identifier and local order reference in a migration table. Create a Trace record for each intended parcel cycle using a stable Idempotency-Key. Record creation can succeed before a carrier timeline exists, so your migration report should have separate ‘created’ and ‘verified’ columns.
Normalize statuses only after deciding how your application handles additional provider detail. Retain original descriptions and timestamps for audit. Trace unknown-timezone scans have a null UTC timestamp and a source-local representation; consumers that require a non-null UTC value need an explicit migration rather than a fabricated offset.
- Run sandbox UI cases before sending any real carrier request.
- Parallel-read a representative cohort while keeping buyer notifications on a single authoritative path.
- Compare matching parcel identity, latest scans, missing histories and event freshness.
- Implement a separate Trace signature verifier and durable event-ID deduplication.
- Set a rollback condition for failed coverage, incorrect status mappings or receiver recovery gaps.
Check event semantics and recovery on both sides
An event receiver should verify the provider’s own contract and acknowledge only after durable acceptance. Trace retries and explicit replay can repeat a business event, so deduplication must survive restarts. Its delivery history records attempts, receiver responses and replay context for investigation.
Reconciliation is still needed when a receiver remains unavailable or when acquisition never produced a usable scan. Keep receipt time separate from scan time and re-read the current owned record when rebuilding a projection. Do not interpret the API’s infrastructure health as a guarantee that every carrier’s event history is complete.
Use a fair cost model instead of a cheaper-by-default claim
Trace budgets successful lookups, including cached, opt-in stale and monitoring responses. A competitor’s Tracker lifecycle or subscription unit can differ. Compare a defined cohort through its actual active lifetime and include engineering, reconciliation and support work.
The Trace free plan provides 200 monthly lookups at 10 requests per minute; paid checkout is currently disabled. Obtain current EasyPost terms for the required tracking and shipping features. This page does not assert a universal price advantage, matching coverage, contractual uptime or faster scans.
Evaluate Trace for a custom order-linked tracking layer that can preserve explicit source limitations. Evaluate EasyPost when its shipping and Tracker workflow fits your requirements, including its standalone tracking path. The right result is the product that passes your pilot, even if that means retaining your existing integration.
Common questions
Must an EasyPost tracking number come from an EasyPost label?
No. The official Tracker reference describes direct Tracker creation for labels purchased elsewhere. Carrier-specific requirements should still be checked.
Can Trace replace EasyPost label purchasing?
No. Trace does not buy labels or rate-shop shipments. A separate tracking layer can coexist with a shipping provider when it passes your qualification tests.
Are a Tracker ID and a carrier tracking number interchangeable?
No. Preserve the provider resource ID and the underlying parcel number separately, along with your local order-parcel identity.
References & next steps
Implementation details were checked against Trace’s current API. External product details may change; verify the linked documentation before deciding.