Problem migrating away from Gmail

[Matt Jacob <matt at mattjacob dot com>]

Hi,

I'm trying to migrate from Gmail to Tuffmail (don't know which IMAP 
server they're running), but I'm having some problems. For some reason, 
13408 messages aren't making it over, but I don't know why. Perhaps you 
can shed some light on my problem?

Here's the command I'm using:

> imapsync --host1 imap.gmail.com --ssl1 --port1 993 \         
>          --host2 mail.mxes.net  --ssl2 --port2 993 \ 
>          --user1 USERNAME1 --passfile1 ./password1.txt \
>          --user2 USERNAME2 --passfile2 ./password2.txt \
>          --folder "[Gmail]/All Mail" --regextrans2 's/\[Gmail\]/Gmail/' \
>          --useheader 'Message-Id' --skipsize

Here's the initial sizing. Note that when I look at the 'All Mail' 
folder in Thunderbird, it's showing 57408 messages.

> ++++ Calculating sizes ++++
> From Folder [[Gmail]/All Mail]                  Size: 940482155 Messages: 59403
> Total size: 940482155
> Total messages: 59403
> Time : 350 s
> ++++ Calculating sizes ++++
> To   Folder [Gmail/All Mail]                    Size:         0 Messages:     0
> Total size: 0
> Total messages: 0
> Time : 0 s

And here's the final output at the end. Sure enough, only 45994 messages 
made it over, according to Thunderbird. You can see that the job took a 
long time (it was running for 14+ hours).

> ++++ Statistics ++++
> Time                   : 52375 sec
> Messages transferred   : 45995 
> Messages skipped       : 0
> Total bytes transferred: 744403484
> Total bytes skipped    : 0
> Total bytes error      : 2068
> Detected 1 errors

So now what? How can I get 100% of my messages transferred? What 
happened to the other 13000 messages or so?

Matt

P.S. Thanks to Gilles for writing this program and offering a mailing 
list for support.