Hello, since the last update of Thunderbird, I can see only the 200 oldest messages of my Yahoo mail box (years 2006-2007) The new messages (2015) are on the Yahoo server, but not on Thunderbird. WHAT TO DO ? Same problem here : http://forums.linuxmint.com/viewtopic.php?f=47&t=197879 https://www.thunderbird-mail.de/index.php/Thread/70395-Thunderbird-l%C3%B6scht-alle-Emails-bis-auf-die-200-%C3%A4ltesten-in-meinen-yahoo-Konten/