[Dovecot] Dovecot default inbox name?

I'm installing dovecot and migrating from mbox to maildir. I've read several articles concerning this process but I can't seem to find the answer to one particular question. What is the default name of the inbox when using maildir format? I need to create this in advance for each user and I don't know what dovecot is expecting for the inbox directory name.

-- Andy Cravens