Sms read permission for a app

I’m looking for help to enable a sms read permission for an app that I’m creating. I need someone to help set up full access to SMS for this purpose. In addition, the SMS messages will be stored externally. All of this is being done for marketing purposes. I require someone with advanced technical skills to get the job done correctly. If you have the expertise and a proven track record, then please apply for this project. Thank you.