Ways to save an email from Outlook to SharePoint
Saving emails from Outlook to SharePoint includes drag & drop, right click, via ribbon menu, automated rules, from a mobile device and email enabled libraries. Most of these can be performed with SharePoint on-premises or Office 365 online or Hybrid.
Drag and Drop
By far the most popular method for saving single or multiple emails is to drag and drop them into SharePoint, Office 365 or OneDrive for Business. You can complete this process from either your Outlook folders, Exchange public folders or pst files. The MacroView client will automatically extract email and document properties, set a save flag including its location and create a unique email filename which prevent duplicates on subsequent save events.