How do I stop Mail from opening automatically on my Mac?
Emily Wong
Updated on May 15, 2026
How do I stop Mail from opening automatically on my Mac?
This can be disabled through the Finder.
- Boot the computer completely into Mac OS X.
- Hold the “Ctrl” key on the keyboard.
- Click the Apple Mail icon in the Dock while still holding the “Ctrl” key.
- Move the mouse pointer over “Options.” This presents a sub-context menu.
- Click “Open at Login” to uncheck it.
How do I set up automatic email on my Mac?
Open the Mail app. Choose Mail > Preferences, then click General. Choose an email app from the ”Default email reader” menu.
Why do programs open automatically on my Mac?
If you still have certain programs opening when you boot up your Mac, it’s likely due to launch daemons and agents hidden within your libraries. These files are hidden in places you won’t normally look and tell the computer to launch programs independently of regular startup items.
How do I stop emails from opening in split screen Mac?
How To Turn Off Split Screen In Mail
- Open the Mail app on your Mac by clicking the Mail icon.
- In the Mail app, click, Mail and then Preferences (or you can press the Command and , buttons together)
- Click the General tab.
- And now deselect “Prefer opening messages in split view when in full screen.”
How do I change Mail preferences on Mac?
To change these preferences in the Mail app on your Mac, choose Mail > Preferences, then click General. Choose the email app you want to use on your Mac. Mail is set by default. Choose how often you want Mail to get new messages from the mail server.
How do I get to Mail preferences on Mac?
In the Mail app on your Mac, choose Mail > Preferences, then click a preference pane:
- General: Change settings that range from how often Mail should check for messages to the kinds of messages to include when you search in Mail.
- Accounts: Add, delete, and disable your email accounts in Mail.
How do I stop programs from starting up automatically?
All you have to do is open up Task Manager by right-clicking on the Taskbar, or using the CTRL + SHIFT + ESC shortcut key, clicking “More Details,” switching to the Startup tab, and then using the Disable button. It’s really that simple.
Why does Mail keep opening in split screen Mac?
While in the Mail App on Mac, Open the Preferences and unselect the box for “Prefer opening messages in split view when in full screen” (see screenshot). This should prevent Mail from continuing to open new emails automatically in the split view mode.
Why does my email randomly split screen on Mac?
This can happen if Mail has an error or pop-up message display. If it does, be sure to address the message. For example, if it’s a password error, double check your mail account passwords.
How do you reset Mail on a Mac?
Here is how to rebuild your Mac Mail:
- Open your Mail app,
- Select a mailbox from the left sidebar.
- On the top menu, select Mailbox > Rebuild.