Selro allow to customise the order export file to match with UKMail order export file format. Please follow the below steps to configure and enable UKMail order export file.
a) Please goto Shipping -> Shipping & Courier Setup
b) Please click 'Settings' next to UKMail shipping. This will open the below screen where you can configure your UKMail export file as per the format defined in your UKMail seller account.
c) Once this is completed, you can export your orders by going into Orders-> Unshipped -> Fulfilled Orders -> Export to UK Mail