Mac Mail App Login Failed
If your Mac is connected to the Internet but suddenly stops sending email, you should generally try again later, and if necessary work with your email provider to resolve. If you're using Apple's iCloud Mail, learn how to resolve issues with iCloud Mail.
Dec 24, 2018 Method 1: Remove the email account from the Mail app. Launch the Mail app. Click on Mail option at the upper menu, and choose Preferences in the pull-down list. Choose the email account you want to delete on the left sidebar, and then click on the '-' button at the bottom. Click on 'OK' to complete the deletion.
Check for status messages
You might see a status icon such as a lightning bolt or warning symbol next to your account's inbox in the Mail sidebar, or in the upper-right corner of the Mail window. Click it to learn more.
Aug 10, 2014 This can show up either as a pop-up window requesting the password be entered again with the message “Enter Password for Account (Name)”, or in the Connection Doctor feature of the Mac Mail app where it says the account verification or login failed, and to try again. I know my e-mail address and password, but I cannot log in. A failing login can have several causes. Maybe you have a typo, changed your password recently or another problem is causing the login to fail. Failed to verify the server certificate. This could be because of your network configuration or your proxy settings.Update. This is likely caused by Avast Web Filtering being enabled and blocking Gmail web access for adding a mail account in Mac Mail.
- If the status is Network Offline, make sure that your Mac is connected to the Internet, then try again.
- If the status is Login Failed, check with your email provider to be sure that your account is set up correctly on your Mac.
- If Mail asks for your password, but entering the password doesn't help, find out why your email provider is rejecting your password.
- If your email service is temporarily unavailable, your email provider might have a status message on their website. For example, Apple's system status page shows the status of iCloud Mail. Status pages are also available for other email services, such as Gmail and Outlook. Some brief service outages might not appear on a system status page, so you might want to wait a few hours and try again.
Test using webmail
Many email providers offer webmail, which is a way to use email with a web browser such as Safari, instead of with an email app such as Mail. For example, if you're using an iCloud Mail account, you can use iCloud.com to send and receive email.
Webmail is a good way to verify that your account is valid and you can sign in to it from the web, but it doesn't mean that your account is set up correctly in Mail. Your email provider can help you verify your email settings and check for other issues that affect sending or receiving email.
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Thanks for using the Apple Support Communities. I understand you’re having some issues using your Gmail account with Mac Mail. I’ll be happy to help with this.
First, if you only want to use Gmail, not iCloud, that’s fine. To ensure you don’t have iCloud enabled, open up System Preferences > Internet Accounts then select iCloud from the group and make sure Mail is not checked.
Oracle Failed Logins
Once you’ve done that, take a look at this article for what to do if you’re getting the Login Failed message due to a password issue on your Gmail account:
This link provides some helpful info regarding the issues you’re running into as well:
Apple Mail Login
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Apr 23, 2019 10:56 AM