E-mail reminder by using InboxSDK (Javascript) for Gmail

I need a developer that uses the InboxSDK to create an e-mail reminder add-in for Gmail. How the system will work: 1. You draft an e-mail 2. Next to the send button, there​ should be a clock icon, when you press that icon you have to option to select various reminder dates e.g. 1 day, 3 days, 1 week, 1 month, specific. To remind you if that person had responded to your e-mail. 3. Add-in saves all the data locally in a Google sheet, (so no external server) 4. An extra page above the inbox button, with waiting for a response. 5. Here are all the e-mails listed that still have no response.