A simple and understandable language describes the third version of the email client The Bat!. The necessary and sufficient set of information is given in order to quickly master practical skills of work . Describes the installation of the mail client and the initial configuration of the program. Practical recommendations for working with mail : receiving, configuring and working with mailboxes, sorting, editing and other operations with letters, structuring correspondence using folders, using the address book, methods of backup and synchronization, methods of labeling and highlighting letters, interface settings. Security issues considered: encryption of emails, protection against spam and viruses. Examples of typical program settings for work at home and in the office. Dop. Information: