Attach files in Outlook on the web

You can also share a file from OneDrive. This way, your recipients can collaborate on it in real time.

Note: The attachment size limit for OneDrive files is 2GB.

  1. At the bottom of a message or calendar event, select > Browse cloud locations.

  2. Choose the file or folder you want to share and select Next. Double-click folders to open them.

  3. Select Share as a OneDrive link.

  4. Choose if people can edit the file or only view it. Select  and then select Change permissions