Restart the device, and try to terminate the app from the Activity Monitor window. If the e-mails are stuck in Outbox, read this guide to fix it. To add an email account to the Mac Mail app, you will need to press the + sign in the accounts option. If you found our solutions helpful for your Outbox on Mac issues, feel free to leave us a comment below. In some instances, all that is required is for you to enter your username and password again to fix the problem. Note: Few users reported that this issue was fixed after correcting their password, so be sure to double-check that. Make sure that your information is correct.Choose Server settings, and click on the Outgoing Account menu and choose Edit SMTP Server List.Go to Mail, then click on Preferences and select Accounts.Open the Mail app again and check if the problem is still there.Select Mail from the Force Quit window and click the Force Quit button.Force stop the application and restart it This software comes prepared with a d iagnose feature that can detect the majority of network problems including IP and DNS issues so you can get to the bottom of this problem quickly.Īfter sorting this all out, Advanced Network Care will improve your Internet connection on your MacBook and speed up all the apps using it like iCloud, iTunes, Safari, and more. If changing the DNS settings didn’t work, we propose troubleshooting this problem by using an excellent tool called Advanced Network Care. For Google’s DNS, use the 8.8.8.8 address.Click on DNS and click the plus button on the bottom of the DNS Servers list.Select your network connection and click on Advanced.Open the Apple menu, then click on System Preferences and select Network.What can I do if emails are stuck in Outbox on MacBook? 1. This can be a problem since you won’t be able to send emails at all, but there might be a way to fix the issue. Many users use the Mail app on macOS, but many complain that emails get stuck in Outbox on their MacBook.

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