How to detect if one link fail when using VRRP

RouterOS Beginner Basics
1

I want to implement redundancy router using VRPP. Below is example of the topology :

My question is how could I know is something happen in one of the link? like if the link is done? I want to implement alert like an email when one link is fail.

Kindly need your help

Thanks

2

Use script feature:
VRRP.PNG

3

any clue for the script?

4

What about sending mail you have been already proposing ?

/tool e-mail send to= …