[Evolution] Default settings

[Karl <jernhammer ystad nu>]

At the moment I am using Thunderbird as my preferred email program and 
so when I open Evolution I deny its request to become the default  on my 
set up (Ubuntu). But, when I do open Evolution I always find one or a 
few mails that have gone there instead of to Thunderbird and I can see 
no reason why these few should do that.......

Thank you
KJ