In order to be able to send emails via the MX you have to setup the SMTP settings in the general settings module as shown below. Make sure it matches settings you may be currently using for your SMTP mail clients. Also not you need to fill in the root directory which should be the Manexcloud directory you setup under the inetpub folder on server.

Another field you will want to change from the default is the Body template.  There is default HTML code being used in this field which will default onto all emails sent out of Manexcloud. You can put in {CONTENT} as shown below in image then the body of email will use whatever is populated into Report Manager body template field(find this by going into any reports section and clicking cogwheel icon next to word report manager). If left blank body  of email will be blank.