external mail syncing utility. Some recommended utilities are listed
below.
-Notmuch requires that every individual message be in it's own file.
+Notmuch requires that every individual message be in its own file.
The well-supported [maildir](http://cr.yp.to/proto/maildir.html) or
"mh"-style storage formats are compatible with notmuch. Basically any
setup in which each mail is in a file of its own will work. The older