How to Setup an Email Account with Outlook 2019?
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Go to File > Info and click on Add Account
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Enter your full email address, such as yourname@example.com, and click Connect
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In Advance Setup, select IMAP
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Enter IMAP details as provided. Make sure to change the hostname to your server hostname and make sure that your IMAP port is correct
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Enter your email password and click Connect.
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Finally, click on Done.
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You can now manage your newly-added email from the left sidebar under the Home tab of Outlook