Is it possible to trigger a task from the message MQTT : Failed to connect to broker?

Thanks so much!
I just tested it and it works.

I am running ESP_Easy mega-2018-dev

Has anyone been able to get Notification-Email to work with Gmail?
It allows for user/pass
Or could someone suggest a free US email server?

Thanks!!

thanks for the link. i should have been more specific. I now understand the System#trigger but
is it possible to trigger off of loss of mqtt or wifi and cause a gpio to go high or low?
I would like to have led indication of connectivity up or down.

Is there a list of the Events that the ESP will report automatically?
i.e Clock#Time, System#Boot....

I have looked at the wiki, i think :| .. could you send me link? I am using a Nodemcu Wemos D1. i have a pushbutton connected between - and D2 relay connected from D7 -> Led -> inputrelay the code you suggested always just preforms the first part of the statement I would like to push the button and ...

I would like to use a push button to toggle a relay based on GPIO condition.
Could someone help me?
I am not sure the proper way in rules to check status of GPIO.

On Pushbutton=1 do
if GPIO13 is 1
then
set GPIO13=0
else
set GPIO13=1