''<p>gredden [[#question-1384560|said]]</p>'' <blockquote>1) Is it possible to know if a filter is running? I use large filters on accounts with many messages. It can take a while for a filter to finish, but sometimes I can't tell whether a filter is still runnning? </blockquote> No. Some actions might be seen in tools > activity manager - move message to a folder for example. You can also turn on filter logging. ''<p>gredden [[#question-1384560|said]]</p>'' <blockquote>2) a) If I start running a filter and then Run a second (or third, fourth, etc.) filter before the first one is complete, will the subsequent filters be run in order? b) Does running a second filter cancel the execution of previous filter(s) that might still be executing? </blockquote> a) I would expect each to start when you initiate it, not "in order". b) No.