I noticed today that, when I do a search within my emails with Thunderbird, it manages to get me references and mails that I had deleted years ago (entire folders that were knowingly deleted).
Yes, I have emptied the Thunderbird bin already. No, said emails are not on the smtp server anymore.
Yet Thundebird still manages to get results from them and is obviously able to produce the entire contents of those mails, as I can see from the search results previews. Though I have absolutely no idea where TB gets these contents from (am both appalled and incredibly angry that it manages to).
So, how does TB manage that ? And how can once and for all ensure that what I want deleted, is actually deleted from TB ?