GBlast by Snov.io: Mass email merge in Gmail

manifest.json

{
  "browser_action": {
    "default_popup": "html/popup.html"
  },
  "description": "__MSG_appDesc__",
  "icons": {
    "16": "img/16x16.png",
    "48": "img/48x48.png",
    "60": "img/60x60.png",
    "128": "img/128x128.png"
  },
  "manifest_version": 2,
  "name": "__MSG_appName__",
  "default_locale": "en",
  "background": {
    "scripts": [
      "js/common.js",
      "js/background/userIdentityController.js",
      "js/background/sentThreadsCache.js",
      "js/background/gcmNotifications.js",
      "js/background/sendOptions.js",
      "js/background/background.js"
    ]
  },
  "content_scripts": [
    {
      "css": [
        "css/gmail-compose-snv.css",
        "css/gmail-drop-up-menu-snv.css",
        "css/gmail-wnd-snv.css",
        "css/gmail-lists.css",
        "css/stars.css"
      ],
      "matches": [
        "https://mail.google.com/*"
      ],
      "js": [
        "js/utils/kefir.min.js",
        "js/utils/inboxsdk.js",
        "js/common.js",
        "js/inbox-common.js",
        "js/inbox-htmls.js",
        "js/inbox-options.js",
        "js/inbox-compose.js",
        "js/inbox-lists.js",
        "js/inbox-appToolbar.js",
        "js/stars.js"
      ],
      "run_at": "document_start"
    }
  ],
  "permissions": [
    "tabs",
    "notifications",
    "gcm"
  ],
  "web_accessible_resources": [
    "img/16x16.png",
    "img/32x32.png",
    "img/48x48.png",
    "img/stars.png",
    "img/close.png",
    "img/icon_google.png",
    "img/14x14.png",
    "img/14x14_error.png",
    "img/14x14_queue.png",
    "img/14x14_sending.png",
    "img/popup.png",
    "img/32_gblast.svg",
    "img/g-blast.svg",
    "img/by-snovio.svg",
    "img/variables.svg",
    "img/settings.svg",
    "img/B.svg",
    "img/info.svg",
    "img/info-hover.svg",
    "img/pause.svg",
    "img/stars.png"
  ],
  "short_name": "__MSG_appShortName__",
  "update_url": "https://clients2.google.com/service/update2/crx",
  "version": "0.25"
}