How to monitor LAN ports?

I am new on Fortinet, our company is moving from Cisco ASA 5505 to Fortigate 30E.   I would like to know how can I monitor and receive emails when the status of LAN ports change (active to inactive and viceversa).

What we have connected into LAN ports don't have a unique IP address (DHCP).

The IOs we have is FortIOs v5.4.4 build 1117.

Any idea and/or suggestion will be appreciated.