What it is
When a shipment crosses an international border, its result page shows a short customs reminder: a heads-up that customs handling or charges may apply, and what that typically means for timing.
When it stays silent
The reminder only appears when it is genuinely relevant. It says nothing for:
- domestic shipments (no border crossed),
- movements within a customs union such as EU ↔ EU,
- shipments already delivered.
So you don't get a customs note on a parcel that never leaves the country.
The anti-phishing safeguard
Customs is a favourite cover story for scams ("pay this fee to release your parcel"). The reminder is written to defend against that. It states clearly that any payment is requested by the carrier or the customs authority — never by TrackJet, and TrackJet never asks you to pay a customs fee. If a message claiming to be from us asks for a customs payment, it is fraudulent.
What it never does
It never invents a specific amount. Duties depend on the goods, the value and the destination's rules — TrackJet does not see those, so it does not pretend to. The reminder is about awareness and safety, not a quote.
This complements the separate customs friction signal (holiday/queue effects on timing); see [the engine docs](/docs/customs-friction) for that side.