Help and FAQ
56 answers · updated 21 October 2026
How MostStack reads your suppliers' files, keeps your Shopify stock in step, adds products, shares stock between partner stores, and how the plans work. Try it on the demo store, read what's new, or contact support.
Getting started
- Which stores does MostStack work with?
- Can I try it before installing?
- What happens when I install the app?
- Does it change my store on day one?
- What's in the app, and what's in the workspace?
- Do I need to install anything for my supplier?
- Which languages and currencies?
Suppliers and files
- Where can a supplier's file come from?
- I have an invite code. Where do I enter it?
- Can MostStack read a supplier's API?
- Which file formats are supported?
- How often does it read the file?
- My supplier emails the file. Does that work?
- Can I read a supplier's own Shopify store?
- How are the columns mapped?
- How do I manage connections?
Imports and cleaning
- What does the cleaning do?
- What if a supplier sends a broken file?
- What happens to products that disappear from a supplier's file?
- What if an import fails?
- Can I see what changed?
Stock syncs
- What does a sync do?
- What are preview and live?
- Which location does a sync update?
- Which stock rules can I set?
- Does MostStack change my prices?
- Can several suppliers sell the same product?
- What stops a sync?
- Can I keep supplier details on my variants?
Your store's products
- Which of my products are synced?
- How do I add a supplier's products to my store?
- What's copied from another Shopify store?
Sharing stock with partner stores
- What is sharing?
- How does my partner connect?
- What terms can I set per partner?
- Can I see what the partner gets before they connect?
- How do I manage invites?
- How do I stop sharing with a partner?
- What if the sharing store leaves?
- Does sharing cost anything?
Keeping an eye on it
- What does the Overview show?
- What are notices and email alerts?
- Where do I see what's new in MostStack?
Plans and limits
- Which plans are there?
- Where do I see my usage?
- What is a product check?
- What happens when I reach the monthly checks?
- How are suppliers counted?
- Are there daily limits?
- What happens when I change plan?
- How far back does stock history go?
- Is there yearly billing, or can I buy extra checks?