Howdy, My system is all SSD disk (2 x M.2 mirrored) for the OS. Running the latest LTS Ubuntu desktop. 8 cores and 64 GB memory. Thunderbird has begun acting sluggish over the last 6 - 8 months. The only thing I can speculate on is that the size of my mail files may have reached some kind of scalability limit with the software. Does anyone have any information on disk size issues with Thunderbird? I have cleared all my Trash and Junk folders but my size on disk is just over 2.5 GB. Any comments, suggestions or recommendations are appreciated. Thanks in advance.