The Google App script for clean up your Gmail Inbox

cleaner.js

/**
 * Gmail Cleaner v0.1.0
 * publishedAt: 2020/10/25
 * Author: @potato4d
 * LICENSE: MIT
**/

// TODO: Customize
const target = [
  'notifications@github.com',
  'builds@circleci.com'
]

function cleanupThreads() {
  if (!target.length) {
    return
  }
  console.log('Search threads..')
  const threads = GmailApp.search(`label: unread AND (from: ${target.join(' OR from: ')})`)
  console.log('Threads count :' + threads.length)
  threads.forEach((thread) => {
    thread.markRead()

    // If you want to add to the trash
    // thread.moveToTrash()
  })
}