Fast Orders.
Accurate Packing.
Clear Pricing.

eCommerce fulfillment from Southern California. We store, pack and ship your orders nationwide and worldwide.

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We fulfill for
  • Online marketplacesAmazon, eBay, Facebook Marketplace
  • Social and live sellingTikTok Shop, Whatnot
  • Your own storeShopify and other platforms
Ships with
  • Major US carriersUPS, USPS, FedEx
  • International carriersDHL and others
About Sonic Fulfillment

One partner for storage, packing, shipping and returns, so your team can focus on selling instead of taping boxes.

50States we ship to, plus international
$0Hidden fees on your invoice

Everything Between the Order and the Doorstep

Pallet stacked with cartons on a warehouse floor

Receiving

We unload, count and inspect incoming stock, and flag any discrepancies to you.

Long aisle of tall warehouse shelving

Storage

Secure shelf, bin and pallet storage, with inventory counts you can check anytime.

Worker packing an order into a shipping box

Pick and Pack

Orders are picked, checked and packed to your standards, including inserts and branded packaging.

USPS UPS FedEx DHL

Shipping

UPS, USPS, FedEx and DHL to every US address, with the service chosen for each package.

Container ship at sea

International Shipping

Ship to customers worldwide with DHL, FedEx, UPS and USPS international services, with customs forms prepared for every package.

Barcoded carton with a label stamp, clipboard and packing tape

eCommerce Prep

Labeling, bagging, bundling and packing for Amazon FBA, Shopify, eBay, TikTok Shop and Whatnot, including live show orders.

Worker opening a returned package to inspect the item

Returns

We receive returns, inspect them and restock sellable items so they're ready to ship again.

Hands placing a wrapped bundle into a box of packing material

Kitting and Bundles

Gift sets, subscription boxes and multi-item bundles assembled before they ship.

Client Dashboard

Stock levels, orders shipped and tracking in one place. View the demo →

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Warehouse racks stocked with boxed inventory and a forklift
Who we work with

Made for Sellers of Every Size

We work with eCommerce sellers of every size, on marketplaces like Amazon, eBay and Facebook Marketplace, live selling apps like TikTok Shop and Whatnot, or your own store, whether you're shipping your first orders or too busy to keep packing them in-house.

Fast & efficient

Orders are processed quickly, shipped promptly, and questions get answered by people who know your account.

Reliable & accurate

Every order is checked before it's sealed, so the right items reach the right customer on schedule.

Transparent & honest

Clear pricing and honest communication. If something goes wrong, you hear it from us first, along with the fix.

A premium partner

We spot problems before they reach your customers and adjust as your order volume changes.

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Get a Fulfillment Quote

Tell us a little about your store and order volume. We'll send back pricing built for your products, with every fee listed.

Get a quote