Edit message content in mail notify by trigger

[phupn]

Hi everyone,
Actually, I am very new to the zabbix system so may be this is a noob question. I want to add more information about the system status when a trigger alert to my email.
Example: I receive an email about cpu load too high like this:
1. Processor load (xxxx:system.cpu.load[,avg1]): 5.25
2. *UNKNOWN* (*UNKNOWN*:*UNKNOWN*): *UNKNOWN*
3. *UNKNOWN* (*UNKNOWN*:*UNKNOWN*): *UNKNOWN*
I want to attached the cpu info like: (xxxx.system.cpu.util) below with these messages although the trigger system.cpu.util is normal means not exceed the warning level. Moreover, the detail of running process is also display to this email. Is it impossible?
Any Ideas help me to configure to this? Thank you for your help so much
Here is my email config:
Trigger: {TRIGGER.NAME}
Trigger status: {TRIGGER.STATUS}
Trigger severity: {TRIGGER.SEVERITY}
Trigger URL: {TRIGGER.URL}

Item values:

1. {ITEM.NAME1} ({HOSTNAME1}:{TRIGGER.KEY1}): {ITEM.VALUE1}
2. {ITEM.NAME2} ({HOSTNAME2}:{TRIGGER.KEY2}): {ITEM.VALUE2}
3. {ITEM.NAME3} ({HOSTNAME3}:{TRIGGER.KEY3}): {ITEM.VALUE3}