A salient question would be what OS you are running. It's been my experience that Thunderbird is orders of magnitude slower on Windows. I find it to be fast eno

A salient question would be what OS you are running. It's been my experience that Thunderbird is orders of magnitude slower on Windows. I find it to be fast enough on Linux, though still acknowledging the fact that it is a bit slow. I read somewhere that this speed difference is due to antivirus.