version 3.0a1pre (2007112303) With the possibility to access the OS X address book it's really easy to send messages to a group of people which are defined inside the system address book. Just drag and drop the list into the appropriate header field. All works fine if an user only have one email address. But if he has multiple addresses we fail in getting the primary one for this list. The OS X address book uses the first entered address as the primary one. If you enter more addresses you can manually switch the primary address within the editor of the distribution list. In that way each list can have it's own primary address for a contact. You can also see it within the Thunderbird address book by opening a list. The shown primary address isn't correct. We should use the primary address of a contact based on the selected list. In my case I sent a message to a contacts business address while he was on vacation and wasn't able to read the message. IMO this is a kind of data loss. There are even more possibilities which will show that using the correct primary address is a major issue.

No idea how the back-end works currently. But as the Addressbook Framework shows it can be retrieved with primaryIdentifier.

As far as I can see we are still retrieving the primary address for a single card but it doesn't seems to honor the distribution list settings: http://bonsai.mozilla.org/cvsblame.cgi?file=/mozilla/mailnews/addrbook/src/nsAbOSXCard.mm&rev=1.3&mark=272&#268

Mark, with all the work done lately on the OS X address book interface it would be great if we could have fixed also this bug. Any chance here? Thanks.

With the latest mail list fixes I used this feature several times now but I'm still stumbling over the wrong email address selection. I believe this will annoy most users. Asking for blocking.

Henrik, remember that we have a "new" definition for blocking, which is pretty strict - only bugs which would actually block a release if they were the last one standing. I'm going to push this to wanted, but it does seem like something that should get a pretty high priority. Picking P2 for now.

Adding the privacy keyword because using the wrong address could sent a private message to a business address. In most cases this is definitely not wanted by the recipient.