CentOS - Nov 2017 - Advice for storage location ...

Hello,

I have an incoming mailserver, and there I'm implementing a mailfilter,
which I did like this: 
http://www.postfix.org/FILTER_README.html#simple_filter

there they use  /var/spool/filter
in this sample script the temporary file is deleted;
can I keep it there for a short time (1 week)?

Thanks,
Walter