Peak season can expose problems that remain almost invisible during normal sales periods. Higher order volume puts more pressure on forecasting, stock accuracy, warehouse picking, system connections, backorders, shipping issues, and customer service at the same time. BigCommerce fulfillment apps can divide that workload across focused tools instead of forcing one platform to solve every operational problem.
The seven apps below address different stages, from preparing inventory before demand rises to resolving delivery concerns after parcels leave the warehouse. This separation gives merchants a practical way to strengthen the parts of fulfillment that are most likely to struggle when order volume climbs.
1. WISMOlabs Post-Purchase Platform
WISMOlabs is a BigCommerce shipping app that helps manage the customer experience after an order is placed, when peak volume can quickly increase delivery questions. Its BigCommerce connection automatically synchronizes shipment data and supports BigCommerce order tracking through branded tracking and personalized delivery notifications. Proactive updates give customers information without requiring them to contact the support team for routine shipment questions. During a rush, merchants can set rules that use carrier events, available order and customer details, and timing to distinguish routine progress from cases that need attention. WISMOlabs can choose an update or connected action and adjust its content to suit the shipment, helping staff avoid reviewing every event manually. The platform therefore addresses post-purchase communication rather than competing with warehouse, forecasting, or inventory software.
During busy periods, delivery communication needs to remain clear even when support teams are handling more requests than usual. Several WISMOlabs functions are relevant to that pressure:
- Automatic synchronization of BigCommerce shipment data;
- Branded tracking across 1,600+ supported carriers;
- Personalized delivery notifications;
- Proactive updates throughout the shipping journey;
- Centralized post-purchase communication.
This gives merchants a dedicated customer communication layer while other systems manage stock and physical fulfillment.
Most Useful When Support Volume Rises
WISMOlabs can help retailers prepare customer communication for a seasonal rise in orders, as well as manage delivery questions during the rush. It can be particularly relevant when a growing shipment count makes manual status updates unrealistic. It combines shipment visibility with communication, exception handling, and configurable returns, while leaving stock control to warehouse tools. That distinction makes it easier to pair with other BigCommerce peak season fulfillment apps.
2. Inventory Planner
Inventory Planner helps merchants prepare inventory before seasonal demand turns into a stock problem. Its BigCommerce connection imports product and sales data that can be used for forecasting and replenishment recommendations. Forecast settings can account for recent sales, trends, seasonality, and stockout history when estimating future requirements. Merchants can then use those forecasts to decide what inventory should be reordered and when purchasing needs to happen. This planning role makes the app relevant before peak orders begin arriving rather than after shortages have already developed.
Seasonal sales create a difficult balance between ordering too little and tying up cash in unnecessary stock. Inventory Planner gives purchasing teams several ways to approach that decision:
- Demand forecasts based on sales information;
- Seasonal forecasting methods;
- Replenishment recommendations;
- Lead time and stock planning;
- Purchase order support based on projected demand.
The app gives merchants a forward-looking view of inventory instead of relying only on current quantities during a fast-moving sales period.
A Strong Match for Advance Planning
Inventory Planner fits retailers that need to make purchasing decisions before Black Friday, holiday campaigns, or other predictable demand spikes. It is especially relevant when a large SKU range makes manual forecasting difficult to maintain. The software does not replace daily warehouse management, which keeps its purpose separate from picking and stock control tools. Its value comes from helping teams enter a high-volume period with a better-informed inventory plan.
3. Back Order by GritGlobal
Back Order by GritGlobal gives BigCommerce merchants a controlled way to continue selling selected products beyond currently available stock. Retailers can assign specific products to the app and set backorder thresholds that determine how many additional units remain purchasable. Incoming stock and back-in-stock dates can also be configured for products where replenishment is expected.
Customer-facing messages can explain that an item is being backordered and will arrive later than a normally stocked product. These controls can help during peak periods when popular products sell faster than replenishment reaches the warehouse.
Backorders work best when merchants know that additional inventory is actually coming and communicate the delay clearly. GritGlobal provides several controls for managing this situation:
- SKU-level backorder thresholds;
- Incoming stock quantities and expected dates;
- Continued sales after regular inventory reaches zero;
- Product-level messages about delayed fulfillment;
- Inventory synchronization options for BigCommerce stores.
This approach lets retailers keep suitable products available without applying the same rule to every out-of-stock SKU.
Better for Temporary Stock Gaps
Back Order by GritGlobal fits stores that expect short seasonal shortages rather than indefinite product unavailability. It is useful when incoming inventory has already been planned, but current demand consumes available units earlier than expected. Merchants still need realistic replenishment dates because backorders create customer expectations that must be met. Used selectively, the app provides another option between normal availability and completely stopping sales.
4. SkuVault Core
SkuVault Core concentrates on warehouse inventory accuracy and order handling, two areas that receive immediate pressure when daily order counts rise. The system keeps track of what products are available and where they are located inside warehouse operations. Orders placed through connected platforms can update inventory records, helping reduce the risk of selling stock that is no longer available. Digital picklists can calculate picking routes, while built-in quality control is designed to reduce fulfillment mistakes. These warehouse functions become increasingly relevant when teams need to process more orders without allowing accuracy to fall.
High-volume periods leave warehouse staff less time to correct poor stock records or inefficient picking routines. SkuVault Core addresses several practical areas inside the fulfillment operation:
- Real-time inventory visibility;
- Product location tracking;
- Digital warehouse picklists;
- Picking route calculation;
- Quality control during fulfillment.
The software is most relevant inside the warehouse, where seasonal order growth turns small inefficiencies into repeated delays.
Well Suited to Busy Warehouse Teams
SkuVault Core works for merchants whose peak season bottleneck appears during inventory handling and picking. It can help teams maintain stronger stock visibility while more orders move through the warehouse each day. This differs from Inventory Planner, which focuses on deciding what stock should be purchased before demand arrives. The two tools therefore address different stages of the same seasonal inventory problem.
5. Order Picking App
Order Picking App is designed to make the physical picking process faster and reduce mistakes before orders leave the warehouse. Its BigCommerce connection automatically imports orders and product data, including stock information and product images. Warehouse staff can collect items by stock location and verify products with barcode scanning when needed.
Completed orders and their history remain available in the order overview, giving customer service teams another way to check fulfillment status. This focused workflow can be useful when seasonal volume puts pressure directly on staff responsible for collecting and preparing orders.
Picking errors become more expensive during peak season because every incorrect parcel creates extra support, replacement, and return work. Order Picking App addresses the warehouse floor with a relatively direct set of tools:
- Automatic BigCommerce order synchronization;
- Product and stock data imported into the app;
- Picking through warehouse stock locations;
- Barcode checks for product verification;
- Order history available after processing.
Its narrow purpose can be useful for merchants that do not need another broad inventory system but want a more structured picking process.
Ideal for Picking Accuracy
Order Picking App is suited to operations where employees need to process a larger queue without relying entirely on paper lists or memory. Barcode verification can add a practical check before an item is assigned to an order. The app is also relevant when inefficient walking routes slow down warehouse work during busy shifts. Its focus remains on picking execution rather than forecasting or customer communication.
6. Extensiv Integration Manager
Extensiv Integration Manager handles data movement between BigCommerce and systems responsible for warehouse or order management. Its BigCommerce workflow downloads new orders and delivers them to a connected WMS or OMS for processing. Inventory levels and shipment tracking can then move back through the integration to BigCommerce.
Detailed shipment confirmation is also supported, giving fulfillment data a defined path between platforms. This connection becomes important during peak periods because manual transfers that seem manageable at normal volume can become a major source of delays and errors.
Higher order counts create more records that need to remain consistent across the ecommerce and fulfillment stack. Extensiv Integration Manager supports several important transfers:
- BigCommerce order downloads;
- Delivery of orders to WMS or OMS platforms;
- Inventory synchronization back to BigCommerce;
- Detailed shipment confirmation;
- Tracking data returned after fulfillment.
Automating these exchanges can reduce the amount of repetitive data handling required when teams are already working through seasonal order volume.
Appropriate for Connected Software Stacks
Extensiv Integration Manager fits merchants whose fulfillment depends on several systems exchanging information reliably. It becomes especially relevant when BigCommerce is connected to an external warehouse, OMS, WMS, or 3PL operation. The platform does not solve warehouse picking or demand forecasting itself. Instead, it keeps the systems performing those jobs connected as transaction volume increases.
7. ShipTect
ShipTect adds shipping protection to BigCommerce orders and lets merchants manage the resulting customer service process themselves. The company states that its BigCommerce plug-in can be installed through the official application marketplace. Customers can opt into protection during purchase, while the merchant retains control over policies for handling shipment-related problems.
This gives stores another route for dealing with lost, damaged, or otherwise problematic deliveries during periods when parcel volume rises sharply. Its role begins around shipping risk rather than inventory planning or warehouse execution.
More parcels naturally create more opportunities for individual deliveries to require investigation or resolution. ShipTect provides a focused layer for those situations:
- Shipping protection offered with ecommerce orders;
- BigCommerce app installation;
- Merchant-controlled customer service policies;
- In-house handling of protected shipment issues;
- Protection revenue retained by the merchant.
This gives retailers a way to plan for shipment problems instead of treating every peak season delivery issue as an unexpected exception.
Useful for Delivery Issue Management
ShipTect fits merchants concerned about the customer service cost of lost or damaged packages during high-volume periods. It is distinct from WISMOlabs because its main role is shipping protection and issue handling rather than tracking communication. Stores considering it should establish clear internal policies for how protected shipment claims will be resolved. That preparation matters when seasonal parcel volume increases the number of cases the service team may need to handle.
Final Thoughts
Peak season fulfillment becomes easier to manage when forecasting, backorders, warehouse work, integrations, delivery communication, and shipping problems have clearly assigned tools. Inventory Planner prepares stock decisions, GritGlobal provides controlled backorders, SkuVault Core and Order Picking App support warehouse operations, and Extensiv keeps fulfillment systems connected. WISMOlabs handles post-purchase shipment communication, while ShipTect addresses protected delivery issues after parcels enter the shipping network.
Merchants do not necessarily need every app in the list, but they should identify where higher order volume creates the first serious bottleneck. Choosing software around those pressure points can make BigCommerce fulfillment more manageable when seasonal demand reaches its highest level.