Send+Tag for Gmail

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Send+Tag for Gmail",
  "description": "This is a simple extension to help you quickly tag emails you're sending out with your most commonly used label.",
  "version": "0.1.8",
  "background": {
    "page": "background.html"
  },
  "options_page": "options.html",
  "permissions": [
    "https://mail.google.com/",
    "http://mail.google.com/",
    "tabs",
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://mail.google.com/*",
        "http://mail.google.com/*"
      ],
      "js": [
        "js/jquery.js",
        "js/follow.js"
      ]
    }
  ],
  "icons": {
    "16": "img/icon_dark.png",
    "48": "img/icon_big.png",
    "128": "img/icon_big.png"
  },
  "browser_action": {
    "default_title": "Go to Gmail",
    "default_icon": "img/icon_dark.png"
  }
}