Mail (Yosemite): Set up Mail with your email accounts
Add an account
The first time you open Mail, it may prompt you to add an email account (if you haven’t yet done so). Select an account type, then enter your account information.
To add another account, choose Mail > Add Account, select an account type, then enter your account information. Make sure the Mail checkbox is selected for the account.
If you already use an account on your Mac with other apps, such as Notes or Messages, you can also use the account with Mail. Choose Mail > Accounts to open Internet Accounts preferences, select the account on the left, then select the Mail checkbox on the right.
Temporarily stop using an account
Choose Mail > Accounts, select the account, then deselect the Mail checkbox; the account’s messages are no longer shown in Mail.
To use the account again with Mail, select the Mail checkbox; the account’s messages are shown again (they don’t need to be downloaded from the server again).
Remove an account
When you remove an email account from Mail, the account’s messages are deleted and no longer available on your Mac. Copies of messages remain on the account’s mail server and are still available (from webmail, for example).
Choose Mail > Preferences, then click Accounts.
Select an account, then click Remove .