In the documentation for git am, it mentions a "Maildir". However, when I search the rest of the Git documentation for what a "Maildir" is I don't find anything. My gut feel is that this is some general, non-git concept that I should already be familiar with (or, at the very least, the Git docs assume as much).
Can someone briefly explain what a "Maildir" is, at least within the context of git am, and optionally provide some more detailed reading material?
"git am" can apply patches that were emailed to you. The patches can be generated using format-patch. When you receive patch emails, they can be stored as a single text file mbox or each email stored as a separate file in a directory mdir.