Changing how email messages are sorted in Horde webmail
To make the following changes it is assumed you are already logged into the Horde webmail client.
If you're not sure how to do this view this article:
To have Horde webmail display your email messages from newest to oldest.
Expand Options
click mail
Under the "Other Options" Heading
Click Mailbox and Folder display Options
Under default Sorting Direction
Select Descending this will display mail from newest to oldest.