All customers will be shown in Customers → List customers
You can also do following things in that page-
You can select customers and Send bulk email
You can select customers and assign to specific groups
You can perform bulk delete for customers
Export customers as csv file
Import customers from csv file
Export as pdf
Import customer from csv file
To import customer from csv file click on the import button beside the add customer button.
Example of the csv file
Full Name,Company,Phone,Email,Address,City,State,Zip,Country John Doe,The Acme Inc.,123456789,[email protected],424 Fake Street,Staten Island,Newyork,10205,United States Jane Doe,CloudOnex,912345678,[email protected],520 Grand View,Staten Island,Newyork,10107,United States