silly quesiton [ot]

[Marc]

> > Removing or deleting a single message from near the beginning of a
> > large flat file takes an inordinate amount of time because the
> > remainder of the flat file has to be rewritten all the way from the
> > point of the deleted message to the end of the file and then
> > truncated.
> 
> maybe why postfix only support maildir++
> 
> all other formats is properitary formats

This 'performance statement' is not even correct under some conditions. I have tested mbox against mdbox, and mbox performed better in those tests.