Inbox Enhance - mail merge, mass email, email tracking and notes for Gmail

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "name": "Inbox Enhance - mail merge, mass email, email tracking and notes for Gmail",
    "description": "Mass email, mail merge, email tracking, and notes all in your Gmail inbox!",
    "version": "1.0.8",
    "content_scripts": [
        {
            "matches": [
                "https:\/\/mail.google.com\/*",
                "http:\/\/localhost:3001\/*",
                "https:\/\/inboxenhance.com\/"
            ],
            "js": [
                "content.js"
            ],
            "css": [
                "content.css"
            ],
            "run_at": "document_end"
        }
    ],
    "web_accessible_resources": [
        {
            "resources": [
                "opened.png",
                "unopened.png",
                "tracking.png",
                "untracking.png",
                "mailmerge.png",
                "icon128.png",
                "note.png"
            ],
            "matches": [
                "https:\/\/mail.google.com\/*"
            ]
        }
    ],
    "background": {
        "service_worker": "background.js"
    },
    "permissions": [
        "scripting",
        "storage"
    ],
    "host_permissions": [
        "https:\/\/mail.google.com\/",
        "*:\/\/*.boostextensions.com\/*",
        "https:\/\/boostextensions.com\/*",
        "http:\/\/localhost:3001\/*",
        "https:\/\/inboxenhance.com\/*",
        "https:\/\/inboxenhance.com\/*"
    ],
    "icons": {
        "16": "icon16.png",
        "48": "icon48.png",
        "128": "icon128.png"
    },
    "action": {
        "default_popup": "popup.html"
    },
    "manifest_version": 3,
    "oauth2": {
        "client_id": "154541990170-f8a49hc1hl7v2u00k21n7qpubpk4h13n.apps.googleusercontent.com",
        "scopes": [
            "https:\/\/www.googleapis.com\/auth\/userinfo.email",
            "https:\/\/www.googleapis.com\/auth\/gmail.send"
        ]
    },
    "externally_connectable": {
        "matches": [
            "http:\/\/localhost:3001\/*",
            "https:\/\/inboxenhance.com\/*"
        ],
        "accepts_tls_channel_id": false
    }
}