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How can I make Firefox open .eml file with Thunderbird (Windows XP)

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I have a webpage that has links to saved .eml files (Thunderbird saves email messages as .eml files). When I click on the link Firefox treats it like a .txt file (displays source). I want Firefox to use Thunderbird as helper application but I have not been able to find a way to do that. Even setting browser.helperApps.alwaysAsk.force to true doesn't bring up the open dialog box. Nor can I manually add eml to applications list. Help needed!

I have a webpage that has links to saved .eml files (Thunderbird saves email messages as .eml files). When I click on the link Firefox treats it like a .txt file (displays source). I want Firefox to use Thunderbird as helper application but I have not been able to find a way to do that. Even setting browser.helperApps.alwaysAsk.force to true doesn't bring up the open dialog box. Nor can I manually add eml to applications list. Help needed!

Isisombululo esikhethiwe

That happens if the server sends the .eml file as text/plain and not as a generic type like application/octet-stream that would force Firefox to download the file.
In such a case there is not much to do about it then to contact the site and ask them to change the content type for .EML files.

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Isisombululo Esikhethiwe

That happens if the server sends the .eml file as text/plain and not as a generic type like application/octet-stream that would force Firefox to download the file.
In such a case there is not much to do about it then to contact the site and ask them to change the content type for .EML files.

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Thank you!

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I don't think you can open eml files in Thunderbird. Here are some simple alternatives: [Opening EML Files Thunderbird]