SMS to notify on Fitbit when battery is low
The Fitbit Blaze has very limited notification support, but it will show texts. It also doesn't bother to tell you the battery is low until way later than the email notification. So this searches Gmail for battery emails, then your phone texts the number you specify (the phone that is sending texts to your Blaze, probably itself). You could use this with any Fitbit that shows your texts. If you have another device with a similar situation you can edit the search accordingly.