I use Thunderbird to keep a copy of my Gmail emails on my local hard drive. My scenario is. I have an email in my gmail inbox which is duplicated in Thunderbird. If I move the copy in Thunderbird to a local Thunderbird folder the copy in my gmail account remains in my Gmail inbox. All fine so far. That's what I want it to do. Now my problem. I set up a filter in Thunderbird with parameters that will automatically move the email to the local folder but this time the filter also archives the copy of the email that was in my gmail inbox. I want to filter / move emails in Thunderbird without causing the copy of it that is in my actual Gmail inbox folder to be archived. I can't understand why; if I move it manually it does not archive but if I filter it it does. Any suggestions on what setting I should change?