Mikrotik send mail from script without configured email client.

First connect to your router with Winbox

Open System section

Then scripts

Create new script

Add script

:log info "Starting Script...";
:local sysname [/system identity get name];
:local smtpserv [:resolve "smtp.gmail.com"];
:local Eaccount "youremail@gmail.com";
:local pass "YourPassword";
:local Raccount "EmailWhereToSend@gmail.com"
/tool e-mail send from="<$Eaccount>" to=$Raccount server=$smtpserv\ port=587 user=$Eaccount password=$pass start-tls=yes\ 
subject="$sysname"\ body="$sysname Test Message";

Press Apply and Run Script

Check Log file , and email client to view Test message