[Evolution] backing up ~/evolution

[Mertens Bram <bram-mertens linux be>]

Hi,

I want to write a little script to backup ~/evolution.
I currently tar and compress the entire directory and the resulting
files are about 35MB in size.

What files can safely be skipped and will result in a considerable
reduction of size?

All mail-folders contain the following files:
folder-metadata.xml
local-metadata.xml
mbox
mbox.ev-summary
mbox.ibex.index
mbox.ibex.index.data

I suppose the .xml files are important since they appear to specify the
type of folder. (anyway they're too small too influence the size
considerably)
But do I need any other files than the mbox file?

TIA
-- 
 #  Mertens Bram "M8ram" <bram-mertens linux be>   Linux User #249103  #
 # Red Hat Linux release 7.3 (Valhalla) kernel 2.4.18-3 i686 128MB RAM #
 #  1:54pm up 4 days, 3:59, 1 user, load average: 0.60, 0.22, 0.14 #