I have retained some e-mails in my inbox for further use. This morning, when I opened my Thunderbird, all these e-mails were gone, all I had were the current day's e-mails. I tried to access them from my ISP's server but they were gone from there also. I spoke to my ISP (Cox Internet) and was told that they had been deleted by Thunderbird. I am the only one in my house who uses the computer and the e-mails were in the account yesterday when I closed my computer for the night. Does anyone know how I might retrieve these e-mails and why they disappeared?