[Evolution] Purging pop account caches (1.4.6)

[Ian Mortimer <ian physics uq edu au>]

Some people here are still using 1.4.6 and I notice that a few have
large pop account cache directories:

   ~/evolution/mail/pop/whoever wherever com/cache

What's the safest way to purge these caches?
Is it necessary to shut evolution down first?

I'm thinking of doing something like:

  find $dir -atime +1 ...

so it doesn't interfere with current operations even if evolution
is running.  Is that safe?

(I thought this question might have been asked before but all I could
find in the archives was that these caches should be purged
automatically.)


Thanks
-- 
Ian