The callable interface of the Mail utility (MAIL) lets you
    send messages to users on your system or on any other computer
    connected to your system with DECnet.

  Additional Information (explode) :

• MAIL$MAILFILE_BEGIN
• MAIL$MAILFILE_CLOSE
• MAIL$MAILFILE_COMPRESS
• MAIL$MAILFILE_END
• MAIL$MAILFILE_INFO_FILE
• MAIL$MAILFILE_MODIFY
• MAIL$MAILFILE_OPEN
• MAIL$MAILFILE_PURGE_WASTE
• MAIL$MESSAGE_BEGIN
• MAIL$MESSAGE_COPY
• MAIL$MESSAGE_DELETE
• MAIL$MESSAGE_END
• MAIL$MESSAGE_GET
• MAIL$MESSAGE_INFO
• MAIL$MESSAGE_MODIFY
• MAIL$MESSAGE_SELECT
• MAIL$SEND_ABORT
• MAIL$SEND_ADD_ADDRESS
• MAIL$SEND_ADD_ATTRIBUTE
• MAIL$SEND_ADD_BODYPART
• MAIL$SEND_BEGIN
• MAIL$SEND_END
• MAIL$SEND_MESSAGE
• MAIL$USER_BEGIN
• MAIL$USER_DELETE_INFO
• MAIL$USER_END
• MAIL$USER_GET_INFO
• MAIL$USER_SET_INFO