An award-winning powerful email client with a friendly, cool interface.It has every feature an advanced user will ever need. Virus-proof Email System for all Windows versions to make your e-communication safe and easy.

The Bat! has a lot of benefits that make your e-mail experience simple and convenient:

Microsoft Exchange Connectivity

The Bat! connects to Microsoft Exchange Servers using native MAPI protocol to fetch or send the messages. You just have to install Microsoft Office Outlook or Microsoft Exchange Client to supply the Exchange connectivity components which The Bat! will be using

Anti-spam Protection

The Bat! has Bayesian filtering in the default installation. You have to educate the plugin what is spam and what is not, and then it will do the job.

Smart Sorting Office

The Sorting Office is a powerful filtering system, not only sorts your incoming, outgoing, read, and replied messages to folders, but also can auto-respond; reply with a custom template; forward, redirect, print, or export messages; send reading confirmations; run an external program and more. The Bat! sorting office is so sophisticated that you can even run the mailing list server with the full subscribe/unsubscribe functionality. More...

Handy Message Templates

In addition to the signatures, The Bat! allows to create the message templates that are using special macros. Any mailbox, folder or entry in the Address Book can have a set of templates for the new message, reply or forward. These templates will greatly expedite the process of message composition, especially when the message has some standard or common text. More...

Quick Templates

In the message editor, Quick Templates will save you hours of typing. Insert text blocks - even from files on disk - add custom message information, attach files and vCards, and more - all with a couple of keystrokes and without using menu commands.

Efficient Antivirus Protection

The Bat! will warn you when you try to open a suspicious attachment. In addition, unlike some other mail clients, The Bat! does not start any scripts automatically. The Bat! v2 features new plug-in interface for anti-virus programs to check data for viruses only in special occasions like receiving mail or saving attachments. The use of plug-ins saves you from the imperative of utilizing permanently running antiviral monitors that may significantly degrade performance of the computer.

Message Parking

Message parking is designed to prevent accidental deletion of a valuable message. When a message is parked, you will not be able to move it to another folder, nor will it be deleted or automatically purged.

Built-In Backup and Restore

You can make backups of all the configuration settings, address books and folders, and restore such information from the backup file in case of accidental data loss. You can also add a comment to the backup file, select which accounts to backup and even password protect the archive file. In addition The Bat! you to create a separate backup for each mailbox.

Mail Synchronisation

Mail synchronisation is one way of keeping two separate copies of The Bat! up to date with each other. You synchronize the messages themselves, mailbox and account settings, the Address Books and attached files.

Extended Support of National Codepages

The Bat! allows you to set an individual codepage per mailbox, per folder or per entry in the Address Book.

Convenient Message Dispatcher

The message dispatcher is special feature of The Bat!, which lets you look at the messages stored on your POP3 or IMAP mail server without downloading them. This is very useful for managing your mail remotely, for example leaving "that copy of the huge document" on the server until you get home but retrieving and reading the urgent memos while still on the mobile connection.

Fast Address Book

The Address Book provides you with an easy way to maintain the list of contacts you have. It is possible to create groups dedicated to a particular classification or for use as a mailing list. Every entry in the Address Book can have a personal and business address, it's own Template, default Codepage, and even photograph and S/MIME-certificate attached to it.

Multilanguage Interface

The Bat! allows to change the interface language "on the fly" without a need to restart the progam.

Submission Forms

Submission forms is a tool for creating queries that are automatically processed by servers - are a great solution for a business client-server environment.

Strong Cryptography

The internal PGP implementation, based on the award-winning OpenSSL lets you encrypt messages and sign them with digital signatures. Handy manager for digital keys included. Free plugins for PGP v5.5, v6.0.2, 6.5, v7.x & v8.x GnuPG is also supported. The Bat! also supports S/MIME via Internal Implementation or Microsoft CryptoAPI. The Bat! is the first e-mail client to support S/MIME compressed data. The Bat! support Secure Socket Layer (SSL) v3.1 / Transport Layer Security (TLS) v1.0 with AES algorithm.

Powerful Import Wizard

The Bat! allows to import messages from the following mail clients:

  1. Microsoft Outlook Express v4.xx, 5.xx, 6.0
  2. Microsoft Office Outlook 97, 2000, XP, 2003
  3. Netscape Communicator v4.xx
  4. Netscape Mail v2.xx, 3.xx
  5. Eudora Lite/Pro
  6. Pegasus Mail v2.xx, 3.xx

You can import the address books in the following formats:

  1. Outlook Express (Windows Address Book)
  2. Microsoft Office Outlook (Contacts Folder)
  3. LDIF-file
  4. Business Card(VCard)
  5. Comma-separated (plain text)
  6. Tab delimited (plain text)
  7. INI-file
  8. Eudora Address Book
  9. Pegasus Tag File

Fast, Built-in Image Viewer

The Bat! has built-in image viewer supporting GIF, PNG and JPEG formats. You don't have to wait until an external image viewer gets loaded.

Runs on any Windows PC

The Bat! has very modest system requirements. It runs on any Windows PC platrofm with at least 800x600 screen resolution and 256 color disply. There are no minimum requirements on memory size or CPU speed. Here is the list of supported operating systems:

  • Windows 11
  • Windows 10
  • Windows 8
  • Windows 95 with Internet Explorer 5.0
  • Windows 98 with Internet Explorer 5.0
  • Windows Millenium (ME) with Internet Explorer 5.0
  • Windows NT 4.0 with Service Pack 6a (SP6a) and Internet Explorer 5.0
  • Windows 2000 with Service Pack 4 (SP4)
  • Windows XP
  • Windows Server 2003

What's New


  • The global Preferences window is now resizable


  • The "Entire tab" could not load in RSS-feeds
  • The time format (12/24 hour) was not respected in Calendar