Can CRM Online 2013 use the CRM 2015 Email Router?

dynamics-crm-2013,dynamics-crm-email-router

After waiting for some help I decided to answer my own question by installing the Email Router Versoin 2015 from here https://www.microsoft.com/en-us/download/details.aspx?id=45017 in a new server, I pointed one of the profiles to CRM 2013 and the result was: "Incoming Status: Failure -The Email Router service that is installed is...

Test & Enable Mailbox in CRM 2013?

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Yes, "Test & Enable Mailbox" in the mailbox is only to test and see if the Server Side sync is functioning correctly.