Integrations

70+ ERP, Ecommerce, WMS Platforms

Instantly connect to global platforms such as Shopify, NetSuite and Microsoft Business Central within minutes.
See all shipping integrations

Over 100 carriers

Connect to domestic, international and pallet couriers and print shipping labels, customs documentation and tracking within seconds.
See all carrier integrations

Shipping API

Integrate shipping directly into your platform with Shiptheory’s API. Building an integration? Become a Shiptheory API partner.
Explore our Shipping API
Customers
Scrub Daddy
Read how Shiptheory has helped Scrub Daddy save 4-5 days in manually assigning deliveries.
Watch now
Jimmy's Iced Coffee
Read to find out a little more about Jimmy's, and how Shiptheory helps them on their mission to fill up fridges around the world with high-quality iced coffee.
Watch now
PetShop.co.uk
The secret sauce is the combination of NetSuite and Shiptheory, to manage all areas of their business and seamlessly ship their orders. Learn how this combination has helped PetShop save £1000s every week.
Watch now
View All Customer Success Stories
Pricing
Partners
Blog
  • Shipping
  • Shiptheory

What you need to know about the 2020 shipping holiday deadlines

One of the most important parts of holiday shipping preparation for every e-commerce brand is knowing which carrier services to use and when to accommodate last-minute shoppers. Knowing which services are available until which dates, is crucial for retaining customer satisfaction.

Last posting date is a specific date that items need to be shipped to make it to a destination on time. For e-commerce retailers, these dates must factor in both the amount of time between ordering and dispatching an item and transit time, or the number of days it takes for the item to arrive at the customer.

We have assembled the most popular carriers’ last posting dates for Christmas into one article. If you want to ship your products in time for Christmas, make sure that your checkout options reflect the deadlines below.

Royal Mail

Parcelforce Worldwide

Hermes

USPS

UPS

FedEx


If you have any enquires regarding the above dates, please do not hesitate to reach out to support via phone, email, or live chat. Our shipping specialists here at Shiptheory are more than happy to provide the assistance you need to find ways to save money and time on every shipment and make this your most profitable holiday season yet.

Get started today for free

Start your free trial
No credit card required

Other posts you may like...

  • Shiptheory

Simplify Relay Shipping with Shiptheory

Relay reports that 99% of its deliveries are attempted on time. Built for ecommerce, its local delivery network combines next-day and standard services…
by Molly Schwerdt
October 29, 2026
  • New Integration

New Integration: Asendia Connect Now Integrated With Shiptheory

We are excited to welcome Asendia Connect to Shiptheory's network of carrier integrations. This new integration allows UK businesses to connect their Asendia…
by Molly Schwerdt
October 27, 2026
Two couriers in navy uniforms unloading cardboard boxes from a delivery van.
  • Ecommerce
  • Guides

Ecommerce delivery solutions: which kind your store actually needs

Seventy-six percent of US shoppers say they'll abandon a purchase if the delivery option they want isn't there. That's from DHL's 2025 E-Commerce…
by Mark Mikkelson
October 26, 2026