Email notification battery empty stickup camera

Just got off the phone with technical support. Reason: i do receive email that the battery is empty on the doorbell but the stickup cams don't send that email. The support woman explained that this feature is not available. So i should check my battery daily...? I hope they can make this small feature with great impact. So when we might need de camera images due to a breakin we don't stumble upon a empty battery problem.