I have been playing with my new set-up, and started importing old messages out of Yahoo! using Fetchmail.
In the web client, every msg is (re-)dated as today, ie either its Fetchmail date or its 'arrived into Zimbra' date.
Is there are way to preserve the original dates or use the transmission date?
PS the same account viewed from Thunderbird (IMAP into Zimbra a/c) displays the original sent/received date and time