Hello Aam,

Tuesday, September 18, 2012, 12:29:40 PM, you wrote:

>> The POP3 protocol does not know "already downloaded"

aas> It sure seems to know it when it comes to the interaction between the
aas> POP3 Bat and Gmail.  :-o

The trick that TheBat! which messages it (on one computer) has already
downloaded is that it keeps a log of the message-IDs. It's in the file
Mail / Accountname / Account.M-R (with M_R probably standing for
Messages_Received). It's a plain-text file.

This is also why, at least over here, any messages already downloaded
on one computer are still considered new and unread on another.

aas> Like Stuart suggested, maybe there is some peculiarity causing
aas> this. For many years now, I have been leaving all messages on the
aas> server, so it's not because any message is deleted on the server
aas> before the second Bat gets a chance to download it. Nope, the
aas> message is there,

Can you verify this with the message despatcher?

1.) Account / Message Despatcher / New Messages only
2.) Account / Message Despatcher / All messages

aas> but the second POP3 Bat somehow detects it had already been
aas> downloaded by the first POP3 Bat, and skips it.

This is very peculiar indeed, as the POP protocol does not know flags
like "read". The IMAP protocol does.

aas> It worked both ways for me when I tested it: no matter if the
aas> desktop PC or the notebook PC happened to be the "first" or the
aas> "second" POP3 Bat to download a message (while both Bats were set
aas> to leave messages on the server).

I hear you. It doesn't seem to make sense though, and I am thinking of
why this is happening to you. Over here (and I read messages on three
machines by POP: Office PC, home PC, laptop), all behaves as you
desire.

aas> As to the interaction between the POP3 Bat and IMAP smartphones,
aas> there is no problem. (Apart from the inconvenience of messages
aas> already-read on the smartphone appearing as unread when
aas> downloaded by the POP3 Bat, the lost mark-up of messages flagged
aas> on the smartphone, etc.)

The smartphone uses IMAP. It flags the messages as read, so if you
view them again with any other IMAP client, they are marked as read.
TheBat, which uses POP in your set-up, does not know this, as the POP
protocol does not use flags... I might have mentioned that above.

aas> Well, for now I have switched to the IMAP Bat on the notebook,
aas> while keeping the POP3 Bat on my main computer, and the weeks and
aas> months to come will -- if nothing else -- give me the opportunity
aas> to observe and compare how The Bat behaves in both environments.

There is one more thing: In order to verify whether a message has been
downloaded already, TheBat (like any other POP client) needs to
download the message ID. If there are, say, more than 2,000 messages
on the server, it slows any POP client down considerably. You say that
you leave all messages on the server - please do check for "all
messages" with the mail despatcher, as suggested above.

-- 

Cheers,
Thomas.

http://thomas.fernandez.hat-gar-keine-homepage.de/

Message reply created with The Bat! 5.2
under Windows XP 5.1 Build 2600 Service Pack 3


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