Track SunYou Logistics SY… and LP… shipments to the UK through Heathrow customs and Royal Mail or Evri delivery.

SunYou (Sypost, `SY…` / `SYUA…` / `SYRM…`) consolidates marketplace orders in Shenzhen and Hong Kong for UK delivery, either pre-printing a Royal Mail Tracked 48 (`…GB`) barcode on the parcel or mapping the `SY…` number to a Royal Mail / Evri last-mile tracking code.

Try a live tracking number:

Barcode transition: SunYou Logistics to Royal Mail

When SunYou Logistics clears customs and hands off to Royal Mail, lastscanned surfaces the secondary tracking number in the top-level message field.

Origin / middle-mile carrier
SunYou Logistics (sunyou)
SunYou SY… / SYRM… / LP… Barcode
^(SY[A-Z]{0,2}\d{9,14}|LP\d{14,17})$
Origin example
SYRM123456789
Final-mile carrier
Royal Mail (royalmail)
Royal Mail S10 (…GB) or Evri H00…
^([A-Z]{2}\d{9}GB|H[0-9A-Z]{15})$
Final-mile example
WG987654321GB
Extracted in .message
Arrived at destination airport LHR — Royal Mail tracking: WG987654321GB

How the SunYou → Royal Mail handoff works

Follow the parcel across both networks without waiting on asynchronous webhooks or losing visibility at the handoff boundary.

1. SunYou Shenzhen / Hong Kong origin sort
SunYou receives the parcel from the marketplace seller and assigns a Royal Mail or Evri final-mile barcode.
2. Flight to London Heathrow & customs release
SunYou air freight arrives at LHR, clears UK customs, and transfers to Royal Mail's Midlands/North West Super Hub.
3. Royal Mail or Evri UK doorstep delivery
Royal Mail or Evri scans the UK barcode and delivers to the recipient.
SunYou query
GET /v1/track/SYRM123456789?carrier=sunyou
Royal Mail query
GET /v1/track/WG987654321GB?carrier=royalmail
SYRM prefix
SYRM… numbers specifically indicate SunYou Royal Mail Direct Line service into the UK

Chain SunYou → Royal Mail in code or MCP

Resolve both legs synchronously in TypeScript, curl, or your AI support agent via Streamable HTTP MCP.

REST (Synchronous GET)

# 1. Query SunYou Logistics origin waybill (extracts final-mile barcode in .message):
curl "https://api.lastscanned.com/v1/track/SYRM123456789" \
  -H "Authorization: Bearer lsk_live_YOUR_API_KEY"

# 2. Query the extracted Royal Mail barcode:
curl "https://api.lastscanned.com/v1/track/WG987654321GB" \
  -H "Authorization: Bearer lsk_live_YOUR_API_KEY"

TypeScript (Automatic Handoff Chaining)

const headers = { Authorization: `Bearer ${process.env.LASTSCANNED_API_KEY}` };
const originRes = await fetch(`https://api.lastscanned.com/v1/track/${encodeURIComponent(number)}`, { headers });
const originPkg = await originRes.json();

// Extract secondary barcode from top-level message ("Arrived at destination airport LHR — Royal Mail tracking: WG987654321GB")
const handoff = originPkg.message?.match(/^Handed to (.+?) as ([A-Z0-9-]+)$/i);
if (handoff) {
  const [, , lastMileNumber] = handoff;
  const destRes = await fetch(`https://api.lastscanned.com/v1/track/${encodeURIComponent(lastMileNumber)}`, { headers });
  const destPkg = await destRes.json();
}

Remote MCP (Claude Code / Cursor / ChatGPT)

claude mcp add --transport http lastscanned https://mcp.lastscanned.com \
  --header "Authorization: Bearer lsk_live_YOUR_API_KEY"

SunYou SY… / LP… Cross-Border to Royal Mail & Evri UK Handoff FAQ

What does the SYRM prefix mean on a SunYou tracking number?
SYRM stands for SunYou Royal Mail Direct Line—an air linehaul service from China that hands off directly to Royal Mail Tracked in the United Kingdom.
Why does SunYou say 'Arrived at destination country airport' for several days?
After landing at Heathrow, consolidated pallets must be broken down by ground handlers and cleared through HMRC before Royal Mail scans individual parcels.

Other carrier handoff guides

Explore cross-border last-mile barcode extraction and domestic USPS consolidator overrides across all 273 carriers.

All 273 supported carriers

International posts and couriers

Cross-border