I use Thunderbird to receive my GMails. In Thunderbird I place emails in different folders with no problem. After a while I wish to delete some of them I no longer wish to retain. I use the delete function and they go into the delete folder. In the previous version of Thunderbird you were able to Empty the deleted folder and it would feed back and delete them from Gmail as well. In the current version I cannot find where to do this. I need to do this because of the number there are and storage problems. How do I do this please?