Outlook vs Thunderbird

After testing the creation of a large distribution list in Outlook, I noticed that the list was not masked when the message is opened from my Thunderbird account. All names and addresses are there.

I am wondering if this works the other way too, I haven’t tried the test list in Thunderbird yet.

Is this common? Is there a patch or workaround? Perhaps if the list is created IN Thunderbird it will be seen as a distribution olist when opened in Outlook. Or maybe even just using the distribution list as the BCC field would work too.

Anyone have experience with this? Anyone tried DAWN for Thunderbird contact merging?

I’ll keep digging elsewhere but wondered if it was common and perhaps I was just missing the boat on something obvious.