List Columns and Preview Pane questions

[soalivetoday]

Hello, I have been using Roundcube through Hostgator for many years and grown very comfortable with it.

Due to issues with Hostgator's email reliability, I just switched to MXRoute, which also hosts the new Roundcube 1.6.  I am aware that some of the old skins were removed as options.

I cannot find any way to add list columns or remove the preview pane in this version.  Is there any way to customize these?

Thank you.

[hobo64]

Fully with you. Same questions.

Many useful settings are not available (I'm using v1.6.6). The new GUI looks strange without a chance to customize it.
What if I do not like Preview Panel?

Just hope that the next update will be easier to use.