Sorry to report that the suggestions made by KE4AVB have nothing to do
with the way things really work (sorry KE4AVB - this is absolutely not
personal but it is technical).

The decision on which messages to download are not made by these
extensions in any way at all.  The decision on which messages to
download are made entirely by the main Thunderbird program.

This is how it works.  Every time Thunderbird contacts the mail server
its first task is to get a list of every email message held on the
server.  These extensions act as a POP server. So the extension gives
to Thunderbird a list of every single email message held on the
server.  If you keep your messages on the server then Thunderbird will
have saved the list it got last time (it is called the popstate.dat
file for each POP account).  Thunderbird compares the two lists and
for every email it thinkls it has not seen before Thunderbird will ask
for the message to be downloaded.  When all the messages have been
downloaded and moved to the Inbox on Thunderbird then Thunderbird will
store the new list (I am leaving out some housekeeping like dealing
with deleted messages but they are not totally relevant at the
moment).  The important point to note is that if you terminate
Thunderbird before it has a chance to complete and store the new list
then next time round it will not recognize that *some* messages were
downloaded and start over from the earlier point again.

There is one other more severe condition.  If the extension has a
significant problem with the server it can return to Thunderbird a
"null" or empty list.  Thunderbird will store that.  Next time you
connect to the server successfully and get a good list of the messages
Thunderbird will think that every message is new and will download the
whole of the server's mail contents again.

To the original poster - there are, you know, valuable add-ons to
delete double downloads but you are knowledgeable to beware of the
issue of the undesirable deletion issue.  If you plan to use the value
of duplicate deletion then you should temporarily change your option
in Thunderbird to "leave messages on the server" while you use the
extension.  I do not know of an add-on that avoids this
need.

On Oct 17, 4:24 pm, KE4AVB <[email protected]> wrote:
> It could been a server when down and MS restored the data from a
> backup and some of your emails may have not been read before that
> particular back was made. Every once a while I get a few old emails
> download again. Hotmail accounts sometimes develop errors and are fix
> without you knowing it as it may be affecting more than one person.
> Keep receiving your emails and if the dupes are constant then there
> maybe problem with webmail addon; otherwise, it may have been failure
> on MS side.
>
> If I remember correctly there is several add-ons for removing the
> duplicates. Search Thunderbird Extensions for the one you like to try.
>
> Eugene
>
> On Oct 17, 4:31 am, WINUX <[email protected]> wrote:
>
> > Hi all
>
> > All of a sudden today, Thunderbird was retrieving my mails again. So
> > now I have alot of messages double and I don't want to delete the
> > doubles as it would probably get my messages deleted from the hotmail
> > server. For a few weeks it did work correct.
> > I use the beta 1.2.25b2 older versions where not working.
>
> > Does anyone has an explanation for this?
>
> > Thanks in advance
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups 
"Thunderbird Webmail Extension" group.
To post to this group, send email to 
[email protected]
To unsubscribe from this group, send email to 
[email protected]
For more options, visit this group at 
http://groups.google.com/group/thunderbird-webmail-extension?hl=en
-~----------~----~----~----~------~----~------~--~---

Reply via email to