Not to be confused with linux sendmail.

1. apt-get install sendEmail

1. Create a bash script "sendemail" and run chmod 755 on it.
   Code Snippet

   #!/bin/sh
   
   export smtpemailfrom=zabbix@yourdomain.com
   export zabbixemailto=$1
   export zabbixsubject=$2
   export zabbixbody=$3
   export smtpserver=yoursmtpserver.com
   export smtplogin=smtpuser
   export smtppass=smtppassword
   
   #Use this line if your SMTP server requires authentication
   /usr/bin/sendEmail -f $smtpemailfrom -t $zabbixemailto -u $zabbixsubject -m $zabbixbody -s $smtpserver:25 -xu $smtplogin -xp $smtppass
   
   #User this line if your SMTP server does NOT require authentication
   /usr/bin/sendEmail -f $smtpemailfrom -t $zabbixemailto -u $zabbixsubject -m $zabbixbody -s $smtpserver:25
   

To run the script

sendemail email@domain.com 'subject here' 'message here!!, cool'