Ui-switch node and e-mail

[gytomig2]

Hello, I'm using (v1.3.5) of system.
I have built a room temprature indicator.
I would to use e-mail notification according to the switch is on.
The e-mail sending is working correctly.
I just can't create the switch related sending method.
Please help to solve this problem.

[jbudd]

Welcome to the forum @gytomig2.

One way to do it would be for the function node to set a context variable according to the output from the switch flow.set('sendemail', "YES") or flow.set('sendemail', "NO")

Then the switch node before email can test the value of flow.sendemail.

[gytomig2]

Thank you 'jbudd' your answer.
Sorry but it is not easy to me.
My target is the next:
If the room temperature less than 19 °C or higher than 21 °C I need an e-mail message.
But when I read the e-mail I would to stop the automatic e-mail sending with a switch (for example).
I'm a programmer (visual basic, Java, LabView, etc.), but unfortunately this NodeRed logic is new for me.
I have to catch this kind of logic method, but it comes slowly

[smanjunath211]

Node-Red -How to Send Email and SMS Notifications

Node-RED Tutorial: Email Alerts & Notifications

these helped me a lot. may be it will to you too, give it a try

[gytomig2]

Thank you 'smanjunath211' and 'jbudd' the ideas.
I used your recommendations and read some informations about the global variables.
And voila the problem solved.

var sendemail=global.get('sendemail') || "NO";
var switch1=context.get('switch1') || 0;
var topic=msg.topic;

if (topic=="s1")
{
    switch1=msg.payload;
}

if (switch1)
    global.set('sendemail', "YES");
if (!switch1)
    global.set('sendemail', "NO");

return msg;