Share and collaborate with Outlook on the web
Share a file in a message
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Select New message.
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On the toolbar, select Attach > Browse cloud locations.
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Choose the file you want to attach from the different options:
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Computer
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OneDrive
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Recent attachments
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Email messages
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Select if you want to:
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Share as a OneDrive link
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Attach as a copy
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Use @mentions to get someone's attention
In the body of the email message or calendar invitation:
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Type the @ symbol and the first few letters of a contact's first or last name.
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Choose a contact from the list.
This adds the contact to the To line of the email message or meeting invitation.
Note: @mentions are only available for Exchange Server 2016, Exchange Online, or Outlook.com users.
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