Gmail Menu Button

Question

I am hoping to write a Google Script that will archive all emails that are older than some date. And in that script I was going to add a custom button, like in Google Sheets, so that I can run my script.

Does the functionality exist in Google Script to add a menu/button to the UI in Gmail ? If so how can I implement this?

Answer 1

It's not possible to modify the GMail UI with Google Apps Script, unfortunately.

As an alternative, you could create a contextual gadget to put your "archive all" button on every message in your inbox. See the Gmail Platform docs.