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If the problem persists, contact your email account provider to verify your account details and setup. When you’re done, click Check Again to verify if your actions resolved the problem. To show log information while Mail tries to connect to mail servers, click Show Detail, then click Check Again. To quickly display the account in Accounts preferences in Mail, double-click the text in the Details column.
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Follow the instructions shown in the Details column. If you’re connected to the internet, there may be a problem with the account’s mail servers or your account setup. In the Mail app on your Mac, choose Window > Connection Doctor.
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View, save, or delete email attachments.Temporarily stop using an email account.
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