Re: [PATCH v3] Allow applying filters to summary consecutively

[Gregory Heytings]

> > I just tried Rmail, again I had a very positive impression, and again I 
> > regret that it works only with mbox files and not with Maildirs.
>
> I can imagine various possible meanings for those words. What exactly is 
> the feature that you propose to implement in Rmail?

Currently Rmail only works with mbox files: each mail folder is a single 
file, in which all mails are placed one after the other.  As you probably 
know, Maildirs were proposed about 25 years ago to address the limitations 
of mbox files, and in particular to remove the need of a locking mechanism 
when the mail folder is accessed concurrently by two programs (e.g. the 
mail delivery agent and the mail user agent).  With Maildirs, which are 
now the standard way to store mails, each mail folder is a directory, in 
which each individual mail is stored in its own file.