To send through local host, you would need to install an SMTP server. You should use the remote host for testing.
The GoDaddy SMTP Server is problematic at best. It is slow to relay messages when it is working at all, they also have pretty strict limits on the number of email that can be sent in a given time period.
On Importing, the primary key column for each table will auto populate. the other fields will not.
you would need to do 3 separate imports for the 3 separate tables.