My supplier emails the file. Does that work?

Yes. Each store has its own MostStack email address (shown when you add an email supplier). Forward the supplier's emails there:

• by hand, as an attachment, or with a mailbox rule;
• from Gmail, Outlook, Apple Mail or Thunderbird.

MostStack reads the original sender and subject, so you set the supplier up with the supplier's own address. It then works however the email reaches you. You choose which attachment to read, for example stock_*.csv.