Dear All, I would like to tidy up my Local Folders, after I imported them from Windows Live Mail. I would like to align the ‘friendly’ name of the Thunderbird mail client as much as possible with the ‘real’ name that the folder has in the file system of Windows Explorer (for example C:/Users/MyName/AppData/Roaming/Thunderbird/Profiles/XYZ1p.default/Mail/Local Folders/TopfolderA.sdb/subfolderA I believe that Windows Live Mail uses a separate file for the name of the Local Folder. I understand the ‘subfolder.MSF’ file in Thunderbird is doing that job although I cannot open that file to see what it exactly says. When I renamed for example ‘subfolderA’ in WLM to ‘subfolderB’ then that name was of course correctly displayed in the WLM interface, however, it was still called ‘subfolderA’ in the Windows Explorer file system. This caused great confusion when importing the folders into Thunderbird as it appeared as ‘subfolderA’. So which option is best to tidy up my Thunderbird folders? 1. Rh click the folder in Thunderbird mail client and rename (that would be easiest) 2. Creating a new folder, eg ‘subfolderB’ and copying mails from ‘subfolderA’ to the new folder? 3. When moving whole subfolders in WLM I noticed that WLM kept not only the old name but the old location as well and moved them to the old location when importing into Thunderbird, resulting in great confusion for me. So again, would it be better to copy all mails from the old folder to the new folder rather than dragging the old folder to the new location? 4. When choosing a new folder name, I assume it’s best to stick to the restrictions of Windows Explorer file system, i.e. no ‘/’ or ‘&’ and so on. I run Windows 10. Dell laptop Any advice would be welcome.