A Quick Shipping Carrier Guide

By Rachel Go  |  Published June 24, 2026

The iDrive Logistics platform chooses optimal carriers for the parcels going through our network based on location, service level requirements, parcel profile, time of the year, and more. However, for shippers who don’t have automated routing set-up, we wanted to share a quick guide to which carriers are best and when.

P.S. iDrive Logistics customers get access to our full transportation guide, just get in touch with your favorite day-to-day contact.

A quick guide to shippping carrier selection

For nationwide coverage across all service levels:

• UPS — full domestic portfolio from 8 AM overnight to economy ground. Strongest for B2B commercial, large packages, Adult Signature required. Guaranteed time-definite delivery on premium service levels.
• FedEx — matches UPS on service breadth, adds 7-day delivery including Sunday via Home Delivery. Ground Economy uses postal injection for cost-effective lightweight last mile. Best for DTC residential.

For universal address reach:

• USPS — the only carrier that delivers to every US address: PO Boxes, APO/FPO/DPO military, US territories. Primary option for HAZMAT (lithium batteries, fragrances, aerosols). No fuel surcharges. No residential surcharges. Flat rate options for dense or heavy items.

For metro and residential density:

• Amazon Logistics — DSP network delivers 7 days a week with photo proof of delivery. Strongest in high-density metro and suburban corridors. Rate-shopping alternative when national carrier residential surcharges spike. Not recommended for rural or low-density ZIPs.
• DoorDash DashLink — Dasher last-mile infrastructure repurposed for parcel. Same real-time SMS tracking as food delivery. Strongest in dense metro corridors: NYC, LA, Chicago, Houston, Dallas, Miami. Packages flow from warehouse to DashLink origin facility to sortation center to Dasher for final delivery.
• SpeedX — tech-driven last mile delivering 1 million+ parcels daily across 12,000+ ZIP codes, reaching approximately 80% of the US population. AI-driven route optimization, DSP driver network, real-time photo proof of delivery. 95%+ on-time delivery rate in served markets.

For regional cost and speed advantages:

• GLS — largest regional carrier on the West Coast, covering 10 states (CA, AZ, NV, OR, WA, UT, NM, CO, TX). Controls first mile, middle mile, and last mile — no handoffs. Often 1 full day faster than national carriers for distances over 150 miles. No dimensional weight charges on packages under 3 cubic feet. Significant savings on apparel and lightweight goods.
• OnTrac — transcontinental network (merged LaserShip + OnTrac) covering 35 states and 70%+ of the US population. 7-day delivery. Fewer surcharges than nationals. Ground Essentials launching in 2026 at up to 30% below traditional economy pricing.

For high-volume cost efficiency:

• DHL eCommerce — 19 US distribution centers processing up to 50,000 pieces per hour. Scales from 1,000 to 100,000+ daily packages. Handles domestic and cross-border in one carrier relationship. Best when per-unit cost is the primary driver.
• OSM Worldwide — optimizes the middle mile through 5 processing facilities, then hands off to USPS for final delivery. USPS address reach at better economics than USPS retail rates. Consistent 3-day average transit. Certified Carbon Neutral.

Wrapping up

This is just a small overview of the carriers available through iDrive Logistics, and a quick glimpse into what they’re usually best for. Each situation is different and we work with our customers to figure out what their exact parameters are for their shipments.

If you’d like to see the carrier mix we would recommend for you, request a carrier analysis here.