On 06/08/2016 09:04 PM, Brendan wrote:
to elaborate on what alec said, roundcube uses the imap SEARCH command to find messages - perhaps your imap server isn't searching in UTF7IMAP encoded strings correctly (or at all).
Brendan, thanks for the explanation, but just to be clear, UTF-7 encoding has nothing to do with searching. This encoding is used only for mailbox names.