Hi. Recently, every email I download in Thunderbird comes as a duplicate. I use my address tom@barkas.co.uk, which goes to my domain barkas.co.uk, hosted by Ionos, set to automatically forward to my zen address, then download from my zen address. I can't see anything in my Thunderbird account settings that would result in this I searched for similar problems and ran chkdsk c:/f and cleared the cache in TB, but still happening. Any ideas?