Use the setting in the log out or restart dialog
If Mac OS 10.15 mail app opens randomly, it might be because of a corrupt Mail settings file. You may have to delete all your Mail settings files to get rid of the corrupt ones. Exit the Mail app, and then launch Finder and enter the path: '/Library/Containers/com.apple.mail'. Causes of Mac Mail Not Working. Typically, problems with Mail come down to incorrect configurations or the need to apply a recent update to the app. Inconsistent internet connections and mail service provider outages can cause Mail to stop working, too. I'm using Outlook 2016 on my Mac and would like to use it for all my email as I use Safari to login to my personal web mail. On Yosemite I would open Mail, go to Preferences and change the Default Email Application in the menu to Outlook. I can do that on El Capitan but as soon as I close preferences and open it again the setting is back to Mail.
When you log out of your Mac or restart it, deselect 'Reopen windows when logging back in' when prompted.
Or start up in safe mode, then restart normally. This doesn't change the setting, but your Mac forgets any windows that were open the last time you logged out or restarted.
If you deselect this setting and an app continues to open automatically:
- The app might be a login item. You can add or remove login items in Users & Groups preferences.
- The app might have installed its own startup software. Often this is controlled by a setting within the app. Check the app's preferences or documentation, or contact the app's developer.
Use the setting in General preferences
To prevent apps from remembering the windows they had open, choose Apple menu > System Preferences, click General, then select 'Close windows when quitting an app.'
Or press and hold the Shift key while opening an app. This doesn't change the setting, but the app forgets any windows that were open the last time you quit the app.
If these steps don't work for an app, the app might have its own setting for reopening windows. Check the app's preferences or documentation, or contact the app's developer.
Matt Cone January 9, 2013 TutorialsMacEmail
Email App For Mac
By default, the Mail application on your Mac displays image attachments inline with the text in the email message. This can be convenient when sending or receiving the occasional message with images that need explanations, as shown below. However, people who frequently send or receive email messages with lots of images may prefer to disable inline image attachments and instead have the images represented by icons only.
Unfortunately, the Mail application does not provide a method of disabling inline image attachments in the preferences, so you'll have to use the Terminal application to change this setting. Here's how to disable inline attachments in Mail.app:
Quit the Mail application, if it is currently open.
Open the Terminal application. (You can find it in Applications → Utilities.)
Enter the following command:
defaults write com.apple.mail DisableInlineAttachmentViewing -bool yesOpen the Mail application. Now any email messages that you send or receive will display image attachments as icons, as shown below.
If you ever want to turn inline image attachments back on, just open the Terminal application and enter the following command:
defaults write com.apple.mail DisableInlineAttachmentViewing -bool no
Mac Opening Apps
That's all there is to it! Enjoy your new image-free messages in your Mac's email application.
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