Examine source code of Mailsie - Email Extractor

{
  "name": "Mailsie - Email Extractor",
  "version": "3.65",
  "description": "Bulk Email Extraction from Google Maps, Search, Yellow Pages & Any Website you Browse. Automatically & Fast.",
  "manifest_version": 3,
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "mailsie.concierge@gmail.com"
    }
  },
  "permissions": [
    "tabs",
    "cookies",
    "declarativeNetRequest",
    "declarativeNetRequestWithHostAccess",
    "notifications",
    "activeTab",
    "storage",
    "scripting",
    "alarms",
    "identity"
  ],
  "options_ui": {
    "page": "html/options.html",
    "open_in_tab": true
  },
  "web_accessible_resources": [
    {
      "resources": [
        "requestListener.js",
        "mapsInjector.js",
        "autoBrowser.js",
        "icons/mailsie-logo.png"
      ],
      "matches": [
        "https://*/*",
        "http://*/*"
      ]
    }
  ],
  "host_permissions": [
    "http://*/*",
    "*://*/*"
  ],
  "icons": {
    "128": "icons/128.png"
  },
  "action": {
    "default_title": "MAILSIE E-MAIL EXTRACTOR",
    "default_popup": "html/popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://gmapsextractor.com/"
      ],
      "run_at": "document_end",
      "all_frames": true,
      "js": [
        "relay.js"
      ]
    },
    {
      "matches": [
        "https://my.spline.design/*"
      ],
      "run_at": "document_end",
      "all_frames": true,
      "css": [
        "style/option.css"
      ]
    },
    {
      "matches": [
        "*://*/*"
      ],
      "exclude_matches": [
        "*://*/maps/*",
        "*://*.yellowpages.com/*",
        "*://*.yellowpages.ca/*",
        "*://*.yellowpages.pl/*",
        "*://*.yellowpages.com.au/*",
        "*://*.yellowpages.co.uk/*",
        "*://*.pagesjaunes.fr/*",
        "*://*.paginasamarillas.com/*",
        "*://*.paginegialle.it/*",
        "*://*.goldenpages.ie/*",
        "*://*.yellowpages.co.za/*",
        "*://*.yellowpages.my/*",
        "*://*.yellowpages.ph/*",
        "*://*.yellowpages.co.nz/*",
        "*://*.yellowpages.ae/*",
        "*://*.yellowpages.sg/*",
        "*://*.yellowpages.hk/*",
        "*://*.yellowpages.in/*",
        "*://*.yellowpages.lk/*",
        "*://*.yellowpages.pk/*",
        "*://*.yellowpages.co.ke/*",
        "*://*.yellowpages.ug/*",
        "*://*.yellowpages.co.tz/*",
        "*://*.yellowpages.mu/*",
        "*://*.yellowpages.ch/*",
        "*://*.yellowpages.vn/*",
        "*://*.yellowpages.com.np/*"
      ],
      "run_at": "document_end",
      "all_frames": false,
      "js": [
        "autoBrowser.js"
      ]
    },
    {
      "matches": [
        "*://*/*search?*"
      ],
      "run_at": "document_end",
      "all_frames": false,
      "js": [
        "googleSearch.js"
      ],
      "css": [
        "style/google.css"
      ]
    },
    {
      "matches": [
        "*://*.yellowpages.com/*",
        "*://*.yellowpages.ca/*",
        "*://*.yellowpages.com.au/*",
        "*://*.yellowpages.co.uk/*",
        "*://*.pagesjaunes.fr/*",
        "*://*.paginasamarillas.com/*",
        "*://*.paginegialle.it/*",
        "*://*.goldenpages.ie/*",
        "*://*.yellowpages.co.za/*",
        "*://*.yellowpages.my/*",
        "*://*.yellowpages.ph/*",
        "*://*.yellowpages.co.nz/*",
        "*://*.yellowpages.ae/*",
        "*://*.yellowpages.sg/*",
        "*://*.yellowpages.hk/*",
        "*://*.yellowpages.pl/*",
        "*://*.yellowpages.in/*",
        "*://*.yellowpages.lk/*",
        "*://*.yellowpages.pk/*",
        "*://*.yellowpages.co.ke/*",
        "*://*.yellowpages.ug/*",
        "*://*.yellowpages.co.tz/*",
        "*://*.yellowpages.mu/*",
        "*://*.yellowpages.ch/*",
        "*://*.yellowpages.vn/*",
        "*://*.yellowpages.com.np/*"
      ],
      "run_at": "document_end",
      "all_frames": false,
      "js": [
        "yellowPages.js"
      ],
      "css": [
        "style/google.css"
      ]
    },
    {
      "matches": [
        "*://*/maps/*"
      ],
      "run_at": "document_end",
      "js": [
        "mapsInjector.js",
        "contentGmaps.js",
        "monitorSuggestions.js"
      ],
      "css": [
        "style/animate.css",
        "style/gMaps.css"
      ]
    }
  ]
}