Save battery juice without missing important email. This app utilizes free Email/SMS gateway to manages wifi and mobile data connection in order to save battery juice without the compromise of missing or delaying instant email. Requirements: 1) Check with your carrier for free Email-to-SMS gateway service; Most US carriers provide this service. For your reference. At&t: (yournumber)@txt.att.netVerizon: (yournumber)@vtext.comhttp://bit.ly/25xWe52) You have free incoming message; Otherwise, you might be charged for this kind of message. How to use: 1) Go to setting panel of your favorite email account, forward your email to the Email-to-SMS gateway. 2) Open this app, enter the keywords that you wanna monitor. 3) Select either "wifi" or "mobile data". Recommend to enable wifi and mobile data before using this app. 4) Click the "Start" button. 5) This app will automatically turn on wifi or mobile data for 2 minutes upon receiving a trigger SMS. 6) You will receive new email almost instantly. Next update: Widget. Buy Battery Helper pro version if you like this app. Email to me if there is any bug.Similar to Juice Defender, Super Power.key word: Improve battery life, push mail, email sms gateway.