8 Must-Have Features for Your Grocery Ecommerce Store

Online grocery is growing fast. Brick Meets Click reported that US eGrocery sales grew almost 25% year over year in August 2026, and average order frequency increased for the 24th month in a row. Shoppers order more often, so every missing item, wrong substitution, or late delivery has a bigger effect on loyalty.

A grocery ecommerce store is not a standard online shop with food in it. It must handle products sold by weight, stock that changes by the minute, picking in busy stores, and deliveries promised for a specific time window.

This article explains eight grocery-specific features your ecommerce store needs. For each one, it describes the operational problem the feature solves and what to look for when you evaluate a platform.

1. Weighted products and cutting options

The problem: Fresh produce, meat, fish, cheese, and deli items are sold by weight. A customer orders "1 kg of chicken breast", but the picker may pack 1.06 kg. If the platform cannot handle this, staff adjust prices by hand, customers are charged incorrectly, or fresh categories are not sold online at all. Fresh categories are often where independent grocers stand out.

What to look for:

• Products sold by weight, by piece with an estimated weight, or both
• Clear estimated prices at checkout and final billing on actual weight
• Cutting and preparation options (sliced, minced, filleted, portioned) with notes for the butcher or deli counter
• Payment pre-authorization that allows for small weight differences

Read more about weighted products and how to sell fruit, vegetables, and meat online.

2. Live inventory by store

The problem: In-store shoppers buy the same products that online customers order. If your website shows yesterday's stock, customers order items that are no longer on the shelf, and orders arrive incomplete.

What to look for:

• Automatic stock and price sync with your POS or ERP, at short intervals or in real time
• Separate stock, prices, and ranges for each store
• Rules to hide or limit products with low stock
• Clear "out of stock" handling that suggests alternatives

See real-time inventory and how the Wave Grocery admin panel manages stock and assortments per store.

3. Substitutions with customer approval

The problem: Some items will be unavailable at picking time, even with good stock data. Without a clear process, pickers guess, customers receive products they did not want, and refunds and complaints increase.

What to look for:

• Customer preferences at checkout: allow substitutes, choose a specific substitute, or no substitute
• Suggested replacements based on brand, size, and price rules
• Real-time notifications so customers can approve or reject a substitute before the order leaves the store
• Final billing that reflects accepted substitutions
• Reporting on substitution rates and acceptance

Read more about substitutions.

4. Picking workflows for store teams

The problem: Picking is usually the largest labor cost in online grocery. Paper lists, unclear routes, and manual weight entry make picking slow and cause errors.

What to look for:

• A mobile picker app that works on standard phones
• Pick lists sorted by store layout and temperature zone (ambient first, frozen last)
• Barcode scanning to confirm the right product and capture weights
• Batch picking, so one picker can collect several orders in one trip
• Performance data: picking time per order and per item, and error rates

See the Wave Grocery picking software and our guide to improving order picking accuracy.

5. Delivery and pickup scheduling

The problem: Grocery customers want their order at a specific time, often on the same or next day. If you accept more orders than your team can pick and deliver, orders are late. If slots are too limited, customers shop elsewhere.

What to look for:

• Delivery slots and pickup slots with capacity limits per store and per zone
• Cut-off times and different fees by slot, day, or area
• Delivery zones based on postcodes or map areas, with minimum order values
• Route planning and driver apps, or integration with your delivery partners
• Order tracking and notifications for customers

See the Wave Grocery delivery software.

6. Loyalty and personalized offers

The problem: Grocery is a repeat business. If your online store does not recognize loyal customers or connect to your in-store loyalty scheme, shoppers have little reason to stay when a competitor runs a promotion.

What to look for:

• A loyalty program that works both online and in store, with a digital card
• Points, rewards, and coupons that apply automatically at checkout
• Personalized product recommendations and offers based on purchase history
• Fast reordering from past orders and saved lists

See the Wave Grocery loyalty software and how to measure customer loyalty.

7. Mobile shopping

The problem: Many grocery orders are placed on a phone, often in short sessions. A slow mobile site or a long checkout leads to abandoned carts. Without your own app, you depend on marketplaces to reach mobile shoppers.

What to look for:

• A fast, mobile-first website and a branded grocery app for iOS and Android
• Quick reorder, shopping lists, and favorites
• Barcode scanning to add products
• Push notifications for order updates and offers
• A shared cart and account across web, app, and store

For example, Greek grocer Thanopoulos drives 20% of its online orders through mobile after moving to Wave Grocery. See the Wave Grocery mobile app.

8. ERP and POS integrations

The problem: Your ERP and POS hold your products, prices, promotions, stock, and financial records. If the ecommerce store is not connected, staff enter data twice, prices on the website do not match the shelf, and reconciliation takes hours.

What to look for:

• Proven integrations with your specific ERP and POS, not only "API available"
• Automatic sync of products, prices, promotions, and stock
• Orders, payments, and refunds sent back to the ERP and accounting
• Integrations with payment providers, delivery partners, and marketing tools
• A clear answer on who builds and maintains each integration, and at what cost

See how Wave Grocery integrates with ERP, POS, and payment systems.

Why these features need customization on generic platforms

General ecommerce platforms are designed for fixed-price products shipped as parcels. Most of the eight features above are possible on them, but usually through plugins, apps, or custom development. This adds cost, extends the launch timeline, and creates maintenance work after every platform update.

If you are comparing platforms, see our guide to the top grocery ecommerce platforms.

Buyer checklist: evaluating a grocery ecommerce platform

Ask every vendor to show these points in a live demo with grocery products:

1. Order a weighted product with a cutting option and show the final billing on actual weight.
2. Change stock in the POS or ERP and show how quickly it updates on the website.
3. Show different prices and ranges for two stores.
4. Mark an item unavailable during picking and show the substitution suggestion and customer approval.
5. Pick an order with the picker app, including barcode scanning and weight entry.
6. Set slot capacity for one store and show what happens when a slot is full.
7. Apply a loyalty reward and a coupon at checkout.
8. Place an order in the mobile app and reorder it with one tap.
9. Show which ERP, POS, payment, and delivery integrations are live with existing customers.
10. Explain what is included in the fee: support, updates, integrations, and the mobile app.

Bringing it together

These eight features work best when they share the same data. Stock from the ERP drives what customers can order. Substitution rules guide pickers. Slot capacity reflects the real picking and delivery team. Loyalty data shapes the next offer. A grocery ecommerce platform that includes them as standard reduces the number of tools to connect and maintain. Explore the Wave Grocery online ordering system or see the pricing plans.

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