Carrier profile · USDOT 172954 · MC-1535071 · Updated Aug 30, 2026
Southern Mail Service Inc
361 power unitsavg 8.7 yrNational · 21 statesCONROE, TX88/100
CARRIER ACTIVEMC-1535071 ACTIVERATED SATISFACTORY
Network & Fraud
Reincarnation chains, shared-VIN links, common domains and officers, and owner-group affiliations — the chameleon / double-broker signals that name-and-USDOT lookups miss.
Last 12 months: 21 trucks also ran under 22 other carriers
VINs inspected under this carrier were recently inspected under other USDOTs too — the active double-broker / shared-equipment signal: USDOT 2596713USDOT 3575439USDOT 3729595USDOT 4236189USDOT 3037338USDOT 3566257USDOT 3953842USDOT 4129595Some overlap is legitimate (leased or sold equipment); review alongside the other signals.
Show all-time history (59 trucks · 53 carriers)
Across all inspections on record: USDOT 2993806USDOT 3037338USDOT 3566257USDOT 3953842USDOT 4129595USDOT 1479667USDOT 1742174USDOT 2911559
Shares a registration email domain with other carriers
@southernmail.com — 4 carriers: USDOT 250564USDOT 356803USDOT 638656
Capacity consistency· registered vs roadside-observed power units
Registered (MCS-150)361361
Observed (24 mo)9090
Shared w/ other carriers6060
Registered capacity materially exceeds what is observed roadside — the MCS-150 may be stale or the fleet under-utilized.
Shared-VIN cross-links· units inspected under more than one USDOT
Showing the 40 most cross-linked of 60 shared VINs.
Owner / group view· confidence: email domain
Owner / group view
Affiliated authorities
Collapses 4 related authorities · joined by email domain
- Authorities
- 4
- Combined power
- 472
- States
- 1
- Oldest authority
- Jun 1, 1974
- Active now
- 2
- SOUTHERN MAIL SERVICE INC· viewingUSDOT 172954361PU
- COOK MAIL SERVICE INCUSDOT 25056456PU
- ALAMO MAIL SERVICE INCUSDOT 35680353PU
- LEEWAY TRANSPORTATION INCUSDOT 6386562PU
Affiliated entities· hover to preview