Thunderbird not showing attachement

Sometime email from Microsoft Outlook to Thunderbird attachment shows only winmail.dat file.  Original attachment will not appear/ unreadable on Thunderbird.


Thunderbird open source developer developed an plugin add-ons for this problem.

That is Called LOOKOUT

How can we install this plugin on Thunderbird.

Open Thunderbird : Go to the Tools Menu and select “Add-ons” (If there is no menu bar, you could press Alt on your keyboard to make it appear or right click on top bar and select menu option)

When the Add-ons Manager tab opens, go to the upper right corner search bar and type “lookout”

Click “Install” then Click “Accept and Install” now it will ask you restart thunderbird

Just Click “Restart now” or close and reopen Thunderbird

After the installation is complete and Thunderbird is restarted LookOut should automatically display attachments properly.

But we assume that this plugin will show you following files too.

  1. dat unusable
  2. trf if anything you had attached on your body of mail using outlook
  3. ics
  4. Rest files will be your attachments.

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