This blog  provides step by step instructions for Creating a site mailbox for a site in SharePoint 2013online.

         Create a site Mailbox:

                  a.Login to SharePoint click site, on the settings “Configwheel” at the top right corner and select “Add an App”.

b.Click on the “Site Mailbox” Icon in the Top now.

c.Find the same app in the list of all apps below.

d.After the site mailbox has been  successfully  created  you should now see the site mailbox listed under  Recent on Quick  Launch  area  of your Site Navigation and in the list of Apps.

e.You now can click on site  Mailbox (either  link or icon ) and you will be Redirected to the Exchange  Server.

f.Go back to the SharePoint site , wait for 5-10 minutes  on the” Mailbox”  Link in quick Launch Section.

g.Then you will be forwarded to the Site Mail Box.


II.Synchronize site Mailbox to Outlook 2013

  1. After creating a new site mailbox it should automatically appear in outlook after a period of time (10-15 minutes).
  2.  Site Mailbox availability in Outlook Depends on the user’s Permissions to the  SharePoint Site.  A site Mail Box will be Synchronized in Outlook only if the user is added to the Default“Owner” and or “Members” group of the share point site .
  3. A web browser window will open listing all site mailboxes available to the user:
  4. If more than ten Site Mailboxes are selected, an error window will be displayed: 

     III. Add additional library to a Site Mailbox:

    By default, Team sites add the standard “Documents” library to the Site Mailbox as part of the provisioning process.

    It is also possible to make additional document libraries available in the Site mailbox in Outlook 2013 by adding them to the Quick Launch navigation area of the site.

    Document library properties:

a.Create/open existing standard document library in a site that has a Site Mailbox provisioned.

b. In the Library Settings navigate to the following menu.

c.Change the option below to “Yes”:

d.Verify the user is in the Site Owner or Members default group:

e.Restart Outlook and the library will be synchronized with Outlook and displayed under the Site Mailbox (this may take up to 15 minutes.