Adding existing customer to a list

To add existing customers to a new list, first, find the customer(s) on your list and select them with the checkmark. Then click "Add to Email List".

Then you can select a list already created or create a new list. Click save. 

You can also upload a customer spreadsheet and add them to new or existing lists during the upload process.  Uploading a list of existing customers will not add them to your account twice, only update their information.