The “Oil Tank LOW” message will only display after “Alert From M1 Fairplay” when I test the rule. Otherwise, when the rule is triggered automatically, it drops this “Oil Tank LOW” text. Oddly, there are a few other text notifications that will always display – like “Driveway Access”.
I have been having similar issues when M1 sends me texts when an outdoor gate sensor is opened, and when it closes. I temporarily changed the email recipient from (my phone number)@vtext.com to (my Gmail username)@gmail.com. So far it is working reliably. I know it doesn’t explain why some of your text alerts seem to work on other zones, but so far for me it seems that sending emails via text is unreliable/delayed. I will continue to monitor. Ideally I would like texts versus emails as you probably do.