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 the OWA “Compose message” window. On older versions of Windows, this is done by modifying the Default value under the following registry key: HKEY_CLASSES_ROOT\mailto\shell\open\command.
For Windows 8 and above, the process is a bit more complicated and one needs to follow the instructions in http://blogs.technet.com/b/mrmlcgn/archive/2013/02/26/windows-8-associate-a-file-type-or-protocol-with-a-specific-app-using-a-gpo-e-g-default-mail-client-for-mailto-protocol.aspx
Thanks to the guys at MS that made it possible, and the ones that helped spreading the news J
Wayback machine has it.
This is the windows 8 link
https://web.archive.org/web/20131216130832/http://blogs.technet.com/b/mrmlcgn/archive/2013/02/26/windows-8-associate-a-file-type-or-protocol-with-a-specific-app-using-a-gpo-e-g-default-mail-client-for-mailto-protocol.aspx
Cant find the other link
Does anyone have better directions on how to make this work? The links mentioned above are dead.
Both of those links are 404. Can someone please post the instructions?
Would love to see the info once at theses links.
I’m a frustrated webmail user on outlook.com (msn, hotmail, etc.) and hope to take advantage of this info somehow.
jc