Hi, I have an Office 365 account synchronized. I see inside the thunderbird profile directory I use the next structure: ImapMail/outlook.office365.com/ and here there are folder.msf files for each of the folders or folder.sbd directories for the account folders with other folders nested. In general, in the last level, together with the folder.msf file I see a folder file, for example, there is ImapMail/outlook.office365.com/INBOX.msf and ImapMail/outlook.office365.com/INBOX and the same for other folders inside the *.sbd directories. But in the main level (just inside ImapMail/outlook.office365.com, not in any *.sbd directory), for some of the folders (without others nested, so without the corresponding *.sbd directory) I only see the folder.msf file, but there is not the file ImapMail/outlook.office365.com/folder The body message of the emails in such folder is not saved in the folder.msf. Where is it then? It is downloaded, since I can see those messages offline. Further, if I open an email in a window I can see its body by means of View > Message Source. So, where is this saved? I tried grep -r "..." ImapMail with some email body content instead of ..., but it did not find anything. Thanks!