Use notes from your Internet accounts
If you keep notes in Internet accounts—for example, iCloud, Google, Yahoo, or AOL—you can add those accounts to Notes on your Mac, and access all your notes in one place. You can view, add, and edit notes in the Notes app on all your devices that use the same accounts, and your changes show up everywhere—so you always have your most current notes at hand.
Note: You don’t need an Internet account to use Notes. You can store notes only on your Mac, but these notes won’t appear on your other devices.
Add an account
For information about using iCloud with Notes, see Set up iCloud on your Mac. To add other types of accounts, follow these steps.
Choose Notes > Accounts, then select an account type.
If you don’t see your account type, click Add Other Account, then select the account.
Enter your account information, then click Sign In.
Make sure the Notes checkbox is selected for the account.
Each account you add is listed separately in the sidebar. If the sidebar isn’t showing, click the Sidebar button 
.
Be sure to set up your iOS devices to use the same notes accounts, so that your notes stay up to date across all your devices. For more information, see the “Get started” section of the user guide for iPhone, iPad, or iPod touch. For a device that doesn’t use the latest iOS version, get the user guide from the Apple Support manuals website.
Temporarily stop using an account
Choose Notes > Accounts.
Select the account, then deselect the Notes checkbox.
The account’s notes aren’t available until you select the checkbox again.
To use the account again in Notes, select the Notes checkbox.
Remove an account
Choose Notes > Accounts.
Select the account, then click the Remove button
.When you remove an account, the account’s notes are deleted and no longer available on your Mac. Copies of the notes remain in your Internet account (for example, iCloud.com or Yahoo) and any iOS devices you had already set up.
If you keep notes in iCloud, you can view, add, and edit those notes on iCloud.com. If you upgrade your notes, you can apply paragraph styles, add checklists, attach map locations, lock notes, and even add people to your notes to collaborate with them. (If you move notes from other Internet accounts to your upgraded iCloud account, you can access all the same features in those notes.) Upgraded iCloud notes are only visible on devices that use OS X 10.11 or later or iOS 9 or later. If you lock a note, it’s only visible on devices with iOS 9.3 or later or OS X 10.11.4 or later. For more information, see What is iCloud.
Tip: If you use Handoff, you can switch between your Mac and other devices while creating, modifying, or viewing notes. To open a note handed off to your Mac, click the Handoff Notes icon that appears at the left side of the Dock.