Gmail Address Check & Send Verify Tool

Check From, To, Cc, Bcc, Subject to avoid mistake operation before sending an email message on Gmail.

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manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "content_scripts": [
    {
      "all_frames": true,
      "css": [
        "checker.css"
      ],
      "js": [
        "checker.js"
      ],
      "matches": [
        "http://mail.google.com/*",
        "https://mail.google.com/*"
      ]
    }
  ],
  "background": {
    "service_worker": "background.js"
  },
  "permissions": [],
  "host_permissions": [
    "http://mail.google.com/*",
    "https://mail.google.com/*"
  ],
  "default_locale": "en",
  "description": "__MSG_ext_desc__",
  "icons": {
    "128": "icons/icon8-6.png"
  },
  "homepage_url": "https://gmplus.io?utm_source=gm_address",
  "manifest_version": 3,
  "name": "__MSG_ext_name__",
  "version": "1.0.8"
}