Change Internet Accounts preferences on Mac
Use Internet Accounts preferences to add your Internet accounts from Google, Yahoo!, and other providers, so you can use them in your Mac apps. The iCloud account you set up in iCloud preferences also appears in Internet Accounts preferences. You can also add another iCloud account, if you have one.
For each account, you can select the account features you want to use, such as Mail, Contacts, Calendar, and more.
Note: Deleting an account or deselecting individual features can remove data stored in your apps. The data may be restored if you select the feature or add the account again. If you’re not sure, ask the account provider.
To view these preferences, choose Apple menu 
> System Preferences, then click Internet Accounts.
Open Internet Accounts preferences for me
List of accounts (on the left) | Shows the accounts already set up on your Mac. Select an account to see its features and settings. | ||||||||||
List of account features or list of account types (on the right) | If an account is highlighted on the left, its features and settings are listed on the right. Select the features you want to use and change settings as you like. If no account is highlighted on the left, you can add one by clicking a provider such as iCloud on the right. | ||||||||||
Add button | To add an account, click the Add button If you don’t yet have an account from a particular provider, such as Yahoo!, create one on the provider’s website, then add it here. If you want to add an account from a provider that isn’t listed, such as a mail or calendar account for your company or school, click Add Other Account on the right, click the type of account you want to add, then enter the requested account settings. If you don’t know the type of account or the account settings, ask the account provider. | ||||||||||
Remove button | To remove the highlighted account and turn off all its features, click the Remove button If your Mac is set up for iCloud Keychain when you remove an account (other than your primary iCloud account), you’re asked whether to remove the account from your other Mac computers set up for iCloud Keychain, or just turn off all the account features on this Mac. | ||||||||||
