Insert from SharePoint / Office 365
When writing an email, you can insert links or attachments from 
Microsoft SharePoint / Office 365. 
  - From a draft/reply email message, select ‘Insert from SharePoint’ 
  
 - Use the navigation tree to select a location from your favorites, recent 
  locations or solution profiles 
  
 - Select one or more documents and choose 'Insert as link' or 'Insert as 
  attachment' 
 
 