http://www.rimarts.co.jp/b2-public-beta/ *****************************************************************************
Update History
Ver.2.12.01 -> Ver.2.20
- "Sync with Portable Media" command added.
You can take your mailbox out with a USB memory or a Laptop and
synchronize with your main computer when you are back.
- "Query Folder", the virtual folder that holds Query criteria, is
supported. In Query dialog, click "Save Query" button.
- You can operate main window while Query is ongoing.
- When displaying a mail items in the list view, it can show the name
associated to the mail address referring the address book. (Choose an
option in "View" > "Mail Address Format")
- Filtering Manager UI was revised to be more intuitive.
- Added a filtering action "Copy to Folder".
- Added filtering options "Default", "Auto", and "Manual" for "Move to
Folder"
- You can enable/disable a filtering rule by right clicking an item in
the tree view of Filtering Manager.
- You can choose an address group as a string for a filtering condition.
For example, you can filter all messages from somebody in a certain
address
group.
- You can change the order of folders and mailboxes in the Tree View by
Drag and Drop.
- "Change Layout" selection menu was added.
- A keyboard command to switch to a next mailbox was added. (Ctrl+G by
default)
- In Remote Mailbox, messages that are marked to delete will be
certainly
deleted when you quit Remote Mailbox even if listing isn't finished.
- Messages that contain only text/html will be searched by Query command
by removing HTML tags.
- "Select Unread Messages" command was added.
- Spell checking will check Subject as well.
- List View pane will be resized according to the current proportion
when
main window is resized.
- The column header width in the address book is remembered.
- When you choose "Abort Session", following session can be aborted by
your choice.
BUGFIXES:
- When POP3 folders were created under Inbox and IMAP4 and POP3 was
switched
by Profiles, those POP3 folders disappeared.
- It took abnormally long time to retrieve large messages from some
SSL/TLS mail server. (I've modified some codes but not sure it was
fixed, since I could not reproduce the problem.)
- When Becky!'s temporary folder B2Temp was replaced with a file by
Scandisk, the program didn't work properly.
- An index error occurred when a message contains two Message-ID headers
and one is empty.
- The macro symbol %S always removed "[...]" from the subject line.
- IMAP UID was treated as signed integer and caused errors.
- After pasting something into To field of Compose window, return codes
were replaced with comma in the clipboard.
- When starting dragging from above the editor pane, and dragging across
the editor until the mouse cursor go past the bottom of the window,
auto scroll could not be stopped.
- "Open" and "Save As" commands for attachments sometimes showed a
temporary file name instead of a right file name.
- In Query dialog, when you open the combo box for the "Date" option and
hit Tab key without closing the combo box, following options did not
switch properly.
- Abnormally terminated when mailing list manager's commands were used
from Tree View's context menu.
. 
Я проверил, и теперь при подтверждении прочтения в это поле вставляется установленный в настройках ящика адрес, или оно остается пустым (именно пустым), а при отправлении автоматически вставляется адрес. PS: постараюсь, чтобы этот вопросик дошел до автора программы.