The "/webmail" page:
This page can be used to read content from the EMAILBOX table
that contains email received by the "fossil smtpd" command.
id=N Show a single email entry emailbox.ebid==N
f=N Display format. 0: decoded 1: raw
user=USER Show mailbox for USER (admin only).
user=* Show mailbox for all users (admin only).
d=N 0: inbox+unread 1: unread-only 2: trash 3: all
eN Select email entry emailbox.ebid==N
trash Move selected entries to trash (estate=2)
read Mark selected entries as read (estate=1)
unread Mark selected entries as unread (estate=0)