Datamolino captures the supplier name from the invoice. The first time you upload a document from any supplier you pair it with the corresponding contact from your Xero organization (supplier name from the invoice does not need to be exactly the same as the Contact name, i.e supplier name = Chargify Ltd, Contact = Chargify). This pairing will be remembered for the next time.
If the supplier does not exist in Xero, you can easily create it by clicking on “Add contact”.
Datamolino will export this “Contact” to your Xero.