Xu Wang <xuwang762@gmail.com> writes: > I bump this. Actually more simple than that, how to search for thread > in which I have participated and Jian has participated? Excluding > threads in which Dave participated is perhaps more complicated. I don't know of an efficient way to do this. You could write a script something like notmuch search --output=threads from:Xu > A notmuch search --output=threads from:Jian > B comm -12 A B I think the output is sorted, but you might also have to sort A and B