Hello. I've been having this problem for the last week. Everything was working fine up until the last week. I am running thunderbird 52.1.1 on ubuntu with an imap connection to a Microsoft exchange server. My filters work correctly all day to move messages from my inbox to subfolders. When leaving work I close thunderbird and turn off my computer. The next morning when my filters run, everything from the previous day (5pm until midnight) remains in my inbox but everything from after midnight (12am-8am) is moved to the correct subfolders by the filters. I usually receive 200-300 emails overnight and there are 70-100 still in themails inbox. I know this isn't a problem with the filters because once the filters finish automatically running, I can select to manually run filters on my inbox (highlight inbox - tools - run filters on folder) and all of the emails that weren't filtered the first time are moved to the correct folder. There isn't just one filter that isn't working. It's multiple or possibly all filters that aren't filtering messages from yesterday on the first run. This just started happening within the last week and the last 3+ months I never had this issue. Any ideas on how to troubleshoot this or possible solutions? Thanks