Hi,
I installed Service Desk Plus (free version) on my laptop to try this software. it was allright, but on the mail config, I have a trouble with the protocol SMTP. With the incoming config hasn't problem, but when I try an answer a request, the module notify an error and not work. The bussiness mail work in Office 365 through a reseller.
If I configure with EWS, the system notify an error about a permission of the mail to answer the request.
I will attach a support file for your analisys.
Regards,
Felipe Ortiz