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Chrome Application To Download Messages

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Saved by Shal
on February 28, 2015 at 2:46:58 pm

I have created a Chrome Application to download Yahoo Group messages. It is based on the YahooMembersApplication Chrome Application.


You will need Chrome for this and you must be able to view the group's messages. Unless you are a moderator, all email addresses in the messages will be obfuscated. After downloading the messages you can save them in an mbox format file.


Download the Zip file YahooMeessagesApplication-0.1.zip, then create a directory for it, then copy the Zip file contents to the directory. Then go to Chrome and click the icon in the upper-right that has three bars. It will say "Customize and control Google Chrome" when you hover the mouse over it. From the menu choose "Tools" | "Extensions". In the upper-right is a checkbox for "Developer mode"; click on it if it is not selected to select it. Then in the upper-left you will see a button saying "Load unpacked extension...", click it. You will then need to select the folder you saved the files from the Zip file to. You should get an application called "Yahoo Messages Export".


Then in the upper-left of Chrome there should be a toolbar button called "Apps". The icon for it is a multi-color matrix. Click on it. The Yahoo Group Messages Export application should appear there; click on it. It is a very basic application, nothing fancy. For "Group" enter your Yahoo Group name, such as GroupManagersForum. You also must enter a start and end message number[1] to download. Click Go and watch the count of messages being downloaded. Yahoo may prevent you from downloading all of your messages at one time; you may have to download the messages over a period of hours or days. Once the download is complete, click Save to save the messages in mbox format.



  1. If you set the End Number higher than the actual last message in the group then the application will not terminate (it will count indefinitely). To stop it, change the End Number to a message number that actually exists, then click the "Go" button again.

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