manifest.json

{
  "name": "Gmail Auto BCC",
  "description": "Open source automatic cc/bcc for gmail.",
  "version": "1.8",
  "manifest_version": 3,
  "web_accessible_resources": [
    {
      "resources": [
        "src/icons/gray-scale-orange-square-mail.png",
        "src/icons/orange-square-mail.png"
      ],
      "matches": [
        "https://mail.google.com/*",
        "https://inbox.google.com/*"
      ]
    }
  ],
  "content_scripts": [
    {
      "js": [
        "src/gmail.ts"
      ],
      "matches": [
        "https://mail.google.com/*",
        "https://inbox.google.com/*"
      ],
      "run_at": "document_start"
    }
  ],
  "background": {
    "service_worker": "src/background.ts",
    "type": "module"
  },
  "host_permissions": [
    "https://mail.google.com/",
    "https://inbox.google.com/"
  ],
  "permissions": [
    "storage"
  ],
  "action": {
    "default_icon": {
      "128": "src/icons/orange-square-mail.png"
    },
    "default_title": "Gmail AutoBCC"
  },
  "icons": {
    "128": "src/icons/orange-square-mail.png"
  },
  "options_page": "index.html"
}