Just Unsubscribe

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "version": "1.0.0",
  "name": "Just Unsubscribe",
  "description": "Upgrade Gmail. Install the missing button to just unsubscribe.",
  "permissions": [
    "https://mail.google.com/",
    "http://localhost:5000/",
    "https://justunsubscribe.com/"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "https://mail.google.com/*"
      ],
      "js": [
        "inboxsdk.js",
        "loader.js"
      ]
    }
  ],
  "icons": {
    "16": "icons/16.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "web_accessible_resources": [
    "icons/unsubscribe.svg"
  ],
  "manifest_version": 2
}