Wow! Thanks a lot. My mistake: I have to get used to IMAP.
Apparently I looked at the mails in Thunderbird and assumed that Thunderbird would mark them as read just privately. But instead it seems they were marked as read on the server. Pegasus honours the flag and downloads unread messages as unread and read messages as read.
Oskar
<p>Wow! Thanks a lot. My mistake: I have to get used to IMAP. </p><p>Apparently I looked at the mails in Thunderbird and assumed that Thunderbird would mark them as read just privately. But instead it seems they were marked as read on the server. Pegasus honours the flag and downloads unread messages as unread and read messages as read.</p><p>Oskar
</p>