Gmail Checker - Multi Account Gmail Notifier

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "manifest_version": 3,
    "version": "1.2.5",
    "name": "__MSG_appname__",
    "description": "__MSG_description__",
    "default_locale": "en",
    "homepage_url": "https:\/\/gmplus.io?utm_source=gm_checker",
    "permissions": [
        "notifications",
        "storage",
        "alarms",
        "identity",
        "idle",
        "contextMenus",
        "nativeMessaging"
    ],
    "host_permissions": [
        "https:\/\/mail.google.com\/",
        "https:\/\/accounts.google.com\/"
    ],
    "action": [],
    "icons": {
        "16": "data\/icons\/colors\/red\/16.png",
        "32": "data\/icons\/colors\/red\/32.png",
        "48": "data\/icons\/colors\/red\/48.png",
        "64": "data\/icons\/colors\/red\/64.png",
        "128": "data\/icons\/colors\/red\/128.png",
        "256": "data\/icons\/colors\/red\/256.png",
        "512": "data\/icons\/colors\/red\/512.png"
    },
    "background": {
        "service_worker": "background.js"
    },
    "content_scripts": [
        {
            "matches": [
                "https:\/\/mail.google.com\/mail\/u\/*"
            ],
            "js": [
                "data\/inject\/watch.js",
                "content.js"
            ],
            "run_at": "document_start"
        }
    ]
}