The Custom Note To Supplier is the default message that goes to all your AliExpress vendors. Since your e-Commerce store will most likely be using the drop-shipping business model, you may want to tell your AliExpress vendors not to include any invoice or promotional materials along with the package or to ship the order using your business name instead of the vendor's name.
To set a default vendor message:
1. Go to Settings.
2. Under the Auto Fulfill section, next to Custom Note To Supplier, enter in your default message.
3. Click "Save".