Google webMail Filer For Thunderbird

Lets say you have used the Mozilla Thunderbird client for some time and have decided to move to the cloud, more precisely to Gmail or Google Mail.
Question is, how do you get your emails and the folder structure over to Gmail? Sure you could do that manually; create the folders over on the Gmail website and forward each and every of your emails to your Google email address. But that's not very practicable if the mail count exceeds a few dozen. What if you have thousands of emails neatly sorted in folders?
Update: the Thunderbird extension is no longer available. We suggest you use the excellent (and free for personal use) MailStore Home software to back up emails and migrate them to your Gmail account. You may also be able to import emails directly on the Gmail website as you can specify Pop3 or IMAP mailboxes that you want to import there as well. End
Google webMail Filer for Thunderbird
You need a third party software like Google webMail Filer for Thunderbird then. The free open source application can process Thunderbird mbox (mailbox) files and import them into Gmail.
Users need to supply their Gmail username and password so that the application can import the mails into the account. That's a problem for some even though the program is open source and theoretically at least possible to find out if something shady is going on (it is not). Still, since most computer users don't have time to analyze source code or the ability to read it in first place, some may skip the software because of the requirement. It would have been better if the program would use Google's official authentication options instead.
I'd still recommend to change the password as soon as the operation has completed successfully. The mail export itself is very simple. It begins by entering the Gmail username and password into the required fields before loading a Thunderbird mail folder using the built-in file browser.
The program scans the selected folder and displays all mbox files in a listing. Each can be selected individually or all by selecting the Tootle Selection option. A click on start filing starts the export of the mails to Gmail. The program monitors the size of the Gmail inbox to block uploading once an 85% fill rate is reached.
Note that you get mailbox folders returned by the program; it is not possible to link mailbox folders with particular emails unless you analyze the folders through other means first.
Users interested in the portable software can download it and its source from the developer homepage over at Admincraft. The software is compatible with 32-bit and 64-bit editions of Windows and requires the Microsoft .NET Framework 3.5.
Closing Words and Verdict
Google webMail Filer For Thunderbird is a useful program for Windows users who want to move their emails from the desktop email client Thunderbird to Google's Gmail service.






You said that Outlook isn’t your main email client, so which is your main one?
I think its thunderbird
It is Mozilla Thunderbird.
Awesome! This actually solved my problem… what a stupid bug.
If this is the same bug that I’ve encountered, there may be another fix: (1) hover over open Outlook item in Taskbar, cursor up to hover over Outlook window item, and right-click; (2) this should give you Restore / Move / Size / Minimize / Maximize — choose Move or Size; (3) use your cursor keys, going arbitrarily N/S/E/W, to try to move or size the Outlook window back into view. Basically, the app behaves as though it were open in a 0x0 window, or at a location that’s offscreen, and this will frequently work to resize and/or move the window. Don’t forget to close while resized/moved, so that Outlook remembers the size/position for next time.
THANK YOU Claude!!! I could get the main window to launch but could not get any other message window to show on the desktop. You are my hero!!!!
Solved my issue! 6 years later and this is still problem…
Fantastic. Thank you. Size did the trick.
This solved my Outlook problem, too. Thank you. :)
Thank you so much, this started happening to me today and was causing big problems. You are a life saver, I hope I can help you in some way some day.
You are a god – thank you!
thanks a lot…. work like charm.. :-)
Yah…thanks Claude. I’ve been having the same problem and tried all the suggestions…your solution was the answer. It had resized itself to a 0/0 box. Cheers
Excellent post. This had me baffled even trying to accurately describe the problem. This fixed it for me.
Thank you
Thanks a lot for the article. Don’t know why it happenend, don’t know how it got fixed, but it was really annoying and now it works :-)
Thanks a lot. I was facing this issue from past 3 week. I tried everything but no resolution. The issue was happening intermittently and mainly when I was changing the display of screen ( as i use 2 monitors). The only option i had was to do system restore. But thanks to you.
I’ve been tried to sole this problem for 12hours. Your comment about changing the display of screen helped me a lot!! Thanks!!
Thank you…don’t know why this happened but your instructions helped me fix it. Running Windows 10 and office pro 2007
Great tip! Thanks!
Worked for me, too – thank you!!!
It’s Worked for me, too
thank you very much!
I had a similar issue with Outlook 2013 on Windows 10 and this helped me to fix it. Thank you very much!
Thank you so much. Solved!
Considering you published this in 2012, incredible not been debugged by Microsoft.
Thank you again. M
This problem was faced by only one user logging to TS 2008 r2 using outlook 2010.The issue was resolved.
Thanks.
Great tip. Thank you!!!! If it helps, I had to use the Control Key and the arrow keys at the same time to bring my window back into view. Worked like a charm.
Thank you, this worked !!!!
Man, you are a fucking god. Thanks a lot, what an annoying bug!!
Awesome, this post solved the issue. Many thanks!