By default, classic Outlook automatically sends and receives your primary mail account every 30 minutes. However, you can add other accounts, change the send/receive intervals, and specify which folders to update.
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On the Send / Receive tab, select Send/Receive Groups. and choose Define Send/Receive Groups.
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Select All Accounts and choose Edit, or select New to start another group.
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In the Send/Receive Settings dialog, select an account and check Include the selected account in this group.
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Set Folder Options, choose Account Options to pick folders to update, and select OK.
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Under Setting for group, set the interval to automatically sync. and make other choices for online and offline. When done, select Close.Â
For more info, see Change send/receive group settings.
Tip: To turn off automatic sync, repeat the first step, but choose Disable Scheduled Send/Receive.Â
