Link your Google Contacts with Gigwell
Visit your Gigwell account settings
Click "Link Account"
Enter your Google Account information
Having a Gmail account connected to agency is required.
You must have an agency Gmail account to manage contacts. To create a new Gmail account visit https://accounts.google.com/signup
To import contacts to Gmail:
Create a custom CSV file, or export the address book from your other webmail provider or email client as a CSV file.
Sign in to Gmail.
At the top-left corner, click Gmail > Contacts.
Above the contacts list, click More > Import....
Click Choose File.
Select the file you'd like to upload.
When it's done, Gmail will display the number of contacts imported. If you receive any error messages during the import, you might need to edit your CSV file.