Exporting Your Contacts
When you send an email, Gmail automatically remembers every recipient. These addresses show up in your Gmail Contacts list, and Gmail auto-completes them when you write a new message. Still, you have to enter the email address at least once. With all your contacts already in an address book at Yahoo Mail, Outlook, or Mac OS X Mail, is this really necessary? No, because you can import addresses into Gmail from your other email accounts. To import addresses into Gmail, you first need to get them out of your current address book and in CSV format. Although it sounds sophisticated, a CSV file is really just a plain text file with addresses and names that are separated by commas.
Exporting Yahoo Mail Contacts
Some email services make it simple to export your contacts in a CSV format. For example, to export your address book in Yahoo Mail:
Exporting Outlook.com Contacts
To export your address book in Outlook.com: Some email clients make it a little more difficult to export to a CSV file. Apple Mail doesn’t supply a direct export in CSV format, but a utility called Address Book to CSV Exporter allows users to export their Mac Contacts in a CSV file. Look for AB2CSV in the Mac App Store. Some email clients export a CSV file that lacks the descriptive headers Google needs to import the contacts. In this case, you can open the exported CSV file in either a spreadsheet program or a plain text editor and add them. The headers are First Name, Last Name, Email Address and so on.
Import Addresses Into Gmail
After you have the exported CSV file, importing the addresses into your Gmail contact list is easy:
