How to IMAP Email Content sensor keep previous state

Configuration
1

Hi Guy, I am trying to setup an imap_email_content sensor to show previous ON or OFF state if email not regconised, Can you guys help me out with the script. I have try {{ (states.sensor.wan_0.state) }} but it will still show ‘unkown’ anyway since the present state is unkown.

here is what i’ve got in configuration.taml (it works fine without the {% else %} but get an “unknown” if it does not fall within those two subject.

sensor:
  - platform: imap_email_content
    server: imap.test.com
    name: wan_0
    port: 993
    username: [email protected]
    password: testpass
    senders:
      - [email protected]
    value_template: >-
      {% if 'WAN(0) Connection WAN(0) link down' in subject %}
        off
      {% elif 'WAN(0) Connection WAN was restored' in subject %}
        on
      {% else %}
#        what to put here for 'else keep previous on or off state'
      {% endif %}
1 Like
3

I do like that…

sensor:
  - platform: imap_email_content
    server: imap.test.com
    name: wan_0
    port: 993
    username: [email protected]
    password: testpass
    senders:
      - [email protected]
    value_template: >-
      {% if 'WAN(0) Connection WAN(0) link down' in subject %}
        off
      {% elif 'WAN(0) Connection WAN was restored' in subject %}
        on
      {% else %}
         {{ states('sensor.wan_0')}}
      {% endif %}
4

No, i end up using a different sensor method.

The one you post just show present state of sensor.wan_0, not previous state.