The Bat!Ritlabs

Changelog

Aug 26, 2026

The Bat! v12.3.1

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New features

  • TLS 1.3 support
  • Added the "Tools | WebDAV Server" menu command
  • Server certificates presented by TLS/HTTPS servers are cached to disk together with the endpoints on which they were seen
  • Added a new TLS tab to S/MIME and TLS Preferences, with options for the cache folder, retention period, cache size, and clearing the cache
  • Added "View certificate..." to certificate lines in the account log, showing the full certificate chain sent by the server

Fixes

  • Reverse DNS was used even when the /SMTPHOST= parameter was specified
  • Fixed a crash in the message dispatcher when a screen reader requested the name of a list
  • Fixed an endless Microsoft login loop after an IMAP account was denied an OAuth token
  • Fixed the classic message pane looping and leaking memory when a calendar invitation (METHOD=CANCEL) was cancelled
  • Fixed the thread view rewriting the calendar every time a message was re-rendered
  • + 3 more
Jul 28, 2026

The Bat! v12.3

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New features

  • Autocrypt Level 1 — opportunistic e-mail encryption with automatic peer-key tracking and send-time recommendations
  • Markdown attachments: .md/.markdown files are tagged text/markdown and rendered as Markdown in ThreadView
  • "Copy Image" command added to ThreadView and HTML message-viewer popups
  • Key Manager can now add subkeys to an existing OpenPGP key
  • Generate ECDSA/ECDH (NIST P-256) subkeys for existing OpenPGP keys
  • + 13 more

Improvements

  • Copy/filter destination folder now updates incrementally instead of a full re-read
  • Higher-contrast text selection color in pure-HTML view under the dark theme
  • Auto-decrypt on thread load restored in the Conversation Thread View, silent-only — uses already-unlocked keys, never prompts
  • Replying to an encrypted message now defaults the editor to Encrypt

Fixes

  • Fixed iCloud calendar events all collapsing onto a single date/time (CalDAV multiget hrefs)
  • Fixed iCloud CalDAV sync failing with 400 Bad Request on path-less server URLs
  • Fixed CEF (HTML) views being disabled when The Bat! runs elevated ("As administrator")
  • Zoom now works in the plain-text editor and in the CEF thread view
  • Fixed an exception when replying from the Mail Ticker message-list window
  • + 19 more
May 18, 2026

The Bat! v12.2

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New features

  • Internal PGP engine (gpmInternal): full OpenPGP without GnuPG — Ed25519, ECDSA, ECDH, RSA, AES-256
  • PGP key server support: HKP/HKPS and WKD (Web Key Directory) with auto-fetch on encrypt/verify
  • PGP Subject protection (ProtectSubject) — encrypts Subject inside PGP/MIME and S/MIME messages
  • Theme switching added to Options → Preferences (light/dark/auto/by time)
  • Color groups: configurable background opacity and corner mark indicator
  • + 5 more

Improvements

  • Improved Microsoft Word-like sticky font/size persistence when navigating adjacent to formatted text in the HTML editor
  • 0002296: Added mouse wheel scrolling in the emoji picker
  • Added full interface translation updates for Bulgarian, Finnish, Italian, and Serbian, fixing many missing translations across various menus

Fixes

  • Fixed an issue with an invisible caret while typing in the HTML editor
  • Fixed quote splitting in the HTML editor
  • Fixed Ctrl+A not working in header fields
  • Fixed an issue with mouse-based field selection in message headers
  • Fixed an issue where adding spaces in Quick Reply (Conversation View) was not possible
  • + 2 more
Mar 31, 2026

The Bat! v12.1

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New features

  • Automatic spell checking and right-click suggestions in message editor's Subject and other text header fields
  • Manual spell check now checks header fields before the message body
  • Option to check for beta releases alongside regular update checks (DNS TXT + version-info-beta.xml)
  • Updater downloads translated "What's New" changelog for the UI language and shows it in the update dialog
  • Ctrl+right-click on address fields selects the address under the cursor

Improvements

  • New component for message print preview
  • Syntax highlighting for previews of attached text files (.ini, .md, .html, .xml) in Conversation View
  • Improvements to the interface customization dialog (search and drag-and-drop support)
  • MSI installer now removes the previous same-bitness installation before installing
  • The active area around the close button for tabs in the account/folder tree and message list has been increased

Fixes

  • Error messages appeared when previewing .xlsx files
  • Icons in the "Options" menu in the Editor were not highlighted when active
  • Certain strings in the Address History were truncated
  • Incorrect initial display of iCalendar (.ics) file contents led to improper event import into the Calendar
  • Message list tabs appeared smaller on 4K monitors
  • + 15 more
Feb 13, 2026

The Bat! v12.0.3

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Improvements

  • Updated CEF to version 144
  • Made numerous improvements to High DPI support throughout the application

Fixes

  • Russian strings were not displayed in the Preferences window
  • The background color of color groups was overridden by the folder tree background
Jan 20, 2026

The Bat! v12.0.2

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Improvements

  • Added missing translations on the header pane in the Conversation View

Fixes

  • Tags' and color groups' colors were missing in the context menu
  • Certain national characters were not properly displayed in the Conversation View
  • Font size settings for Source Viewer in "Preferences" were not applied in the "View Message Source" window
  • Resolved an issue that caused unintended font size changes in the classic message preview and the plain text editor after opening the "View Message Source" window
  • Further fixes to the font size issues related to the message source viewer
  • + 2 more

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