The copy and paste method is the simple method of importing your subscribers, although if you are planning to import a large number of subscribers from different sources this method can sometimes be inefficient and/or time consuming.
Step 1
You will need to select the character which will act as an enclosure for the field - for example field between single or double quotes.
If the data you are going to paste has the fields enclosed using single or double quotes you will have to select appropriate option
Step 2
Here you will need to map the fields within your system with the import data fields. If you have custom fields in your mailing list they will be displayed in the drop down.
You should always map the email address field with the email address within import data. There is an option to ignore certain fields as well if you do not wish to import them.
If you are going to import new subscribers to the list always select "Don't add to suppression list" option.
If you are importing subscribers to suppression list global or list based then select the appropriate option
When you are finished populating these options hit the "Next" button to complete the import. The result screen will give you the details about the import process completion.
Adding Subscribers Using File Upload