[Maildev] Integrating LookOut / TNEF / winmail.dat

Ben Bucksch ben.bucksch at beonex.com
Wed Dec 6 17:46:22 EST 2017

Why it's useful to integrate this:

Once in a while, Microsoft Outlook (the desktop application) decides to 
send out these "winmail.dat" files. They contain the actual email and/or 
attachment. Without decoding it, you can't read what the sender wanted 
to tell you. It maybe a meeting invitation (and then you don't know when 
the meeting will be), and you have to ask back. It's highly 
embarrassing, esp. in business negotiations. It has happened to me.

I am not sure about this particular addon, whether it works well. I'm 
just saying that the functionality would be useful for our users.

Even as I despise the idea of winmail.dat. But given that it's one of 
our most popular addons, that shows there's a need.

Ben Bucksch wrote on 06.12.17 23:04:
> Hey Magnus,
> you said the TNEF addons all have license problems and use non-OSS 
> libraries.
> The most popular is LookOut 
> https://addons.mozilla.org/de/thunderbird/addon/lookout/
> The page says it's MPL 1.1. I looked at the content, it's pure JS and 
> tnef.js has no special license header, so I assume it's MPL 1.1 like 
> the rest. The ext page description says "The TNEF decoding engine was 
> inspired (with permission) by the tnef.sf.net project", so that 
> appears to be a re-write by the LookOut author.
> Do you still think that there are license problems? If so, which ones?
> Ben

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