Use OWA URL links to compose message directly in Office 365
This is often asked on the different Office 365 communities, and we finally have a solution. You can get the details here: http://blogs.msdn.com/b/carloshm/archive/2016/01/16/how-to-compose-a-new-message-and-populate-quot-to-quot-and-quot-subject-quot-fields-in-office365.aspx With those new parameters, you can now configure OWA as the default handler for the mailto protocol in Windows, so that clicking an email address will open …
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