I logged into Webmail today to find that only inbox mail received since 16th October 2015 is visible (although with the dreadful talktalk webmail client the few hundred emails are spread over 54 separate pages). Sent, Trash and Junk folders remain intact and display messages back 6 years.
This is not related to SMTP or my email client settings as I have ensured that Outlook and iPhone keep messages on the server (and have done happily for the past several years).
Where are they? Anybody know?