HOLD YOUR HORSES for Gmail & Outlook

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "HOLD YOUR HORSES for Gmail & Outlook",
  "short_name": "HOLD YOUR HORSES",
  "description": "Warns you if there are any third-party domains among email recipients when using Gmail & Outlook on the web.",
  "version": "4.0.1",
  "manifest_version": 2,
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_action": {
    "default_popup": "popup/popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://mail.google.com/*"
      ],
      "css": [
        "libs/remodal/remodal.css",
        "libs/remodal/remodal-default-theme.css",
        "content/common/styles.css"
      ],
      "js": [
        "libs/jquery/jquery-3.2.1.min.js",
        "libs/remodal/remodal.min.js",
        "content/common/debounce.js",
        "content/gmail/guard.js",
        "content/gmail/index.js"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "https://outlook.live.com/*"
      ],
      "css": [
        "libs/remodal/remodal.css",
        "libs/remodal/remodal-default-theme.css",
        "content/common/styles.css"
      ],
      "js": [
        "libs/jquery/jquery-3.2.1.min.js",
        "libs/remodal/remodal.min.js",
        "content/common/debounce.js",
        "content/outlook/guard.js",
        "content/outlook/index.js"
      ],
      "run_at": "document_end"
    }
  ],
  "permissions": [
    "storage",
    "https://mail.google.com/*"
  ],
  "web_accessible_resources": [
    "content/images/*"
  ]
}