This is NOT A FREE SMS APP.
YOU WOULD BE CHARGED PER SMS as per your service providers plan.
Import the contacts from the phone book or from an excel file ( Microsoft Excel 2003) . xlsx (Miscrosoft Excel 2007/2010/2013) is not supported. The xls file should have two fields. First field should be name and second the number. A two second delay has been incorporated between two successive SMS which is a system requirement. Although the app supports long SMS( > 160 character), it is advisable to split long message into multiple single messages to have predictable outcome.