Hello and welcome to Apple Support Communities staylorinoz,
If I'm understanding your post right, the Mail app freezes on your Mac when you create a new message and address it to a recipient that isn't in your contacts. I know how disruptive it can be to experience complications with apps on your Mac, and I'm happy to help you with a solution.
Let's start with a full restart of your Mac if you haven't done so already. This is a pretty basic step, but it can be really helpful for resolving various issues. Next, reset the NVRAM using the steps here:Do you have multiple email accounts set up in Mail? If so, let’s try seeing if we can narrow this down to a particular email account. Go to System Preferences > Internet Accounts. Select one of your email accounts from the left side and uncheck the box next to Mail and then test out composing a message in the Mail app. Do this for each one of your email accounts. If the issue is resolved with Mail disabled for one of those accounts, try removing and readding that particular email account next using the steps here:
Set up Mail with your email accounts
If the issue persists, see if you experience the same thing when using Mail while booted in safe mode: macOS Sierra: Start up in safe mode After that, test out Mail in a brand-new user account: macOS Sierra: Set up users, guests, and groups on your Mac. Also, let me know at what point does Mail freeze, for example, does it freeze after you type in the email address or does it not freeze until you try to send the email message?
Thanks for using Apple Support Communities.
Take care.
If I'm understanding your post right, the Mail app freezes on your Mac when you create a new message and address it to a recipient that isn't in your contacts. I know how disruptive it can be to experience complications with apps on your Mac, and I'm happy to help you with a solution.
Let's start with a full restart of your Mac if you haven't done so already. This is a pretty basic step, but it can be really helpful for resolving various issues. Next, reset the NVRAM using the steps here:Do you have multiple email accounts set up in Mail? If so, let’s try seeing if we can narrow this down to a particular email account. Go to System Preferences > Internet Accounts. Select one of your email accounts from the left side and uncheck the box next to Mail and then test out composing a message in the Mail app. Do this for each one of your email accounts. If the issue is resolved with Mail disabled for one of those accounts, try removing and readding that particular email account next using the steps here:
Set up Mail with your email accounts
If the issue persists, see if you experience the same thing when using Mail while booted in safe mode: macOS Sierra: Start up in safe mode After that, test out Mail in a brand-new user account: macOS Sierra: Set up users, guests, and groups on your Mac. Also, let me know at what point does Mail freeze, for example, does it freeze after you type in the email address or does it not freeze until you try to send the email message?
Thanks for using Apple Support Communities.
Take care.
Nov 24, 2017 2:15 PM
![Mac mail app freezing windows 10 Mac mail app freezing windows 10](/uploads/1/3/4/1/134132690/253534068.jpg)
When Apple Mail keeps crashing continuously, it drives a Mac user mad. Discover various causes of this problem and solutions for both advanced users and newbies in a single article. At least one of the listed methods should work.
To quit (close) a Mac app normally, choose Quit from the app's menu in the menu bar, or press Command (⌘)-Q. If the app doesn't quit, follow these steps to force the app to quit.
How to force an app to quit
If you set the Mail app to automatically run during startup, your inbox will be loaded as soon as you boot up your Mac and your new emails are ready to be read. However, recent Mail app crashes in High Sierra and Mojave have brought inconvenience to a lot of users. This has extended to many applications, including Apple’s own Mail app. One frustrating issue has been when the Mail app opens in split screen all by itself. Mail opening in Split Screen on macOS Catalina. This bug may not be exactly new to Catalina, but the Apple Mail app has been wreaking havoc on users for quite some time.
Press these three keys together: Option, Command, and Esc (Escape). Macos catalina review. Best all in one messaging app mac. Or choose Force Quit from the Apple menu in the upper-left corner of your screen. Crave tv mac app. (This is similar to pressing Control-Alt-Delete on a PC.)
Then select the app in the Force Quit window and click Force Quit.
You can even force the Finder to quit, if it stops responding: Select Finder in the Force Quit window, then click Relaunch.
Delete Mail App On Mac
Learn more
Mac Mail App Freezing Windows 10
How to force an app to close on your iPhone, iPad, or iPod touch.