There are several ways to add new contacts to your Gmail account. Whenever you reply to or forward a message from someone new, Gmail automatically adds her email address to your contact list. You may also manually add new contacts one at a time, instruct Gmail to import contacts and messages directly from another email service or import contacts stored in a CSV database file.
Add Contacts One at a Time
Click "Gmail" and then select "Contacts."
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Click "New Contact" and then fill in the email address and any other information you want to include in the contact record.
Click "Contacts" and then "Gmail" to return to your primary inbox.
Import Contacts From Other Services
Open Gmail. Click the gear icon, then click "Settings."
Click "Accounts and Import," followed by "Import mail and contacts."
Type the email address you want to add contacts from and then click "Continue." At the time of publication, Gmail can transfer contacts from POP3 or Post Office Protocol version 3 protocol mail servers, but not IMAP or Internet Message Access Protocol services.
Type the account's password and then click "Continue."
Check the box labeled "Leave a copy of retrieved message on the server." Otherwise, messages in your other account are deleted as they are transferred to Gmail's servers.
Click "Start Import" to begin the transfer of messages and contacts, then click "OK."
Import Contact CSV Files
Sign in to the non-Gmail account that has the contacts you want and then create and download a contact CSV file. For example, Outlook.com users should click the Outlook.com "Down" arrow, select "People" and then check "All" to select contacts. Click "Manage" and then "Export for Outlook.com and other services." Outlook.com will automatically start the CSV file download. Yahoo Mail users should click "Contacts," check "Select All," click "Actions" and then "Export." Select "Yahoo CSV" and then click "Export Now" to start the download process.
Sign in to your Gmail account, click "Gmail" and then "Contacts."
Click "More" and then "Import."
Click "Choose File," locate the downloaded CSV file using your file manager, click "Open" and then "Import." The new contacts will appear under a "Imported" label that includes the current date.