The fastest way to sign out of Mail
To log out of Mail on Mac, open the Mail app, click Mail in the top menu bar, then select Sign Out. A dialog box will ask you to confirm — click Sign Out again. This removes your email account from the Mail app entirely and closes any active connection to your email server.
If you do not see a Sign Out option, your version of macOS may be older. In that case, go to Mail > Preferences, click the Accounts tab, select your email account on the left, then click the minus (−) button at the bottom to remove it. This achieves the same result: your account is no longer stored in the app.
Signing out is different from straightforward closing the Mail app. Closing the window leaves your account logged in and ready to sync new messages the next time you open it. Signing out actually disconnects your account, which matters if you are sharing your Mac with someone else or selling it.
Key Takeaways
- Signing out through Mail > Sign Out removes your account from the app and stops it from syncing new messages.
- Removing an account from Mail does not delete your emails from the server — they stay in your email provider's system.
- If you want to keep Mail open but prevent it from checking email automatically, turn off Mail notifications and disable background refresh instead of signing out.
- On a shared Mac, signing out is more find than just closing the app, because a logged-in account can receive new messages without your knowledge.
What happens to your emails after you sign out
Your emails remain on your email provider's servers — Gmail, Outlook, Yahoo, or wherever your account lives. Signing out of Mail on your Mac does not delete anything. The next time you sign back in on any device, all your messages will be there exactly as you left them.
Mail on Mac stores a local copy of your messages for faster searching and reading. When you sign out, that local copy stays on your Mac's hard drive. If you want to remove it completely, you will need to delete the Mail folder from your Library. This is rarely necessary unless you are concerned about someone else accessing old messages on a shared computer.
The difference between signing out and disabling sync
Signing out removes the account entirely. Disabling sync keeps the account in Mail but stops it from checking for new messages. If you share your Mac with family members and want to prevent them from seeing new incoming mail, disabling sync is faster than signing out every time you step away.
To disable sync without signing out, go to Mail > Preferences, click General, and uncheck Check for new messages. You can also turn off notifications for that account by going to System Settings > Notifications, finding Mail, and toggling off alerts. The account stays in the app, but Mail will not fetch new messages or alert you to them.
Signing out on older versions of macOS
Versions of macOS before Big Sur (released in 2020) do not have a Sign Out option in the Mail menu. Instead, you remove accounts through Preferences. Open Mail, go to Mail > Preferences, click Accounts, select your email account, and click the minus button.
If you are running an even older version and the Accounts tab does not appear, try Mail > Preferences > Email Accounts instead. The exact menu names vary, but the principle is the same: find your account in the settings and delete it from the list.
What to do before signing out on a shared Mac
If you are the only person who uses your Mac, signing out is straightforward. On a shared computer, take a moment first to make sure you are not leaving someone else without email access. If multiple people use the same Mac, each person should have their own user account on the Mac itself — not share one login.
If you do share a user account with someone else (which is not ideal for security), signing out of Mail will disconnect their email too. In that case, ask them to sign back in afterward, or consider setting up separate user accounts on your Mac so each person can have their own Mail setup.
Signing out remotely if you cannot access your Mac
If your Mac is lost or stolen, you cannot sign out of Mail on the device itself. Instead, change your email password from another device — a phone, tablet, or another computer. Once you change your password, Mail on the missing Mac will no longer be able to connect to your email account, even though it is technically still configured in the app.
You can also use Find My Mac (if you set it up beforehand) to remotely erase your Mac, which will remove all accounts and data. Go to iCloud.com, click Find My, select your Mac, and choose Erase. This is a last resort because it erases everything on the device, not just Mail.
Why you might want to sign out instead of just closing Mail
Closing the Mail app does not disconnect your account. If someone else sits down at your Mac and opens Mail, they will see your inbox, read your messages, and receive new emails in your name. Signing out prevents this because the account is no longer stored in the app.
Signing out is also useful if you are troubleshooting Mail problems. Sometimes removing and re-adding an account fixes sync issues, password errors, or notification problems. It forces Mail to re-authenticate with your email provider from scratch.
Frequently Asked Questions
Does signing out of Mail delete my emails?
No. Your emails stay on your email provider's servers. Signing out only removes your account from the Mail app on your Mac. You can sign back in anytime and see all your messages.
Will I still get email notifications after I sign out?
No. Once you sign out, Mail stops checking for new messages and will not send you notifications. If you want notifications but do not want to stay signed in, disable sync instead of signing out.
Can I sign out of just one email account if I have multiple accounts in Mail?
Yes. Go to Mail > Preferences > Accounts, select the account you want to remove, and click the minus button. Other accounts will stay signed in and continue to sync.
What if I forgot my email password and cannot sign back in?
You can still remove the account from Mail without knowing the password. Go to Mail > Preferences > Accounts, select the account, and click the minus button. To sign back in later, you will need to reset your password through your email provider's website.
Is signing out of Mail the same as signing out of iCloud?
No. Mail is one app; iCloud is your entire Apple account. Signing out of Mail only affects the Mail app. If your email is an iCloud address, you can sign out of Mail while staying signed into iCloud on your Mac.