{
  "id": 2188974,
  "title": "Thunderbird to flap twice as fast from September",
  "url": "https://urgent.news/2026/08/20/thunderbird-to-flap-twice-as-fast-from-september-2188974",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-08-20T15:03:00.000Z",
  "source": {
    "name": "The Register",
    "slug": "the-register",
    "url": "https://www.theregister.com/software/2026/08/20/thunderbird-to-flap-twice-as-fast-from-september/5290393"
  },
  "original_language": "en",
  "account": "Mozilla's Thunderbird messaging app is set to change its release schedule, moving from bi-monthly updates to twice-monthly updates, beginning in September. This adjustment aims to align more closely with Firefox's faster release cadence. Thunderbird will continue to offer Extended Support Releases (ESR) for users who prefer a more stable environment, with the latest ESR being version 154.\n\nFor those who missed earlier updates, the latest ESR versions are now the primary focus. The new Thunderbird 154 release brings several enhancements, particularly useful for Microsoft 365 users. It supports Microsoft Graph API, which is becoming the preferred method for interacting with Microsoft's cloud services due to the deprecation of the older Exchange Web Services (EWS) API. This update also improves the handling of encrypted messages using Cryptographic Message Syntax, enhances drag-and-drop and context-menu functionalities, and offers better attachment previews on macOS.\n\nOther improvements include minimized Thunderbird icons on the system tray for desktop users, more graceful handling of interrupted connections during large IMAP operations, and over 30 assorted bug fixes and more than 50 security fixes. These updates aim to provide a more secure and efficient email experience.",
  "summary": "Email client follows Firefox onto two-week release treadmill",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 2,
    "also_reported_by": [
      {
        "outlet": "The Register Software",
        "title": "Thunderbird to flap twice as fast from September",
        "url": "https://urgent.news/2026/08/20/thunderbird-to-flap-twice-as-fast-from-september",
        "published": "2026-08-20T15:03:00.000Z"
      }
    ]
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}