Syntax for mailbox_default_options

ellie timoney ellie at
Fri Apr 13 00:09:46 EDT 2018

I believe it's an integer bitmask of the OPT_* values that are defined in imap/mailbox.h in the source.

The sparse documentation suggests it's for developer, rather than normal administrator use, maybe for rigging up tests?  It's included in the imapd.conf man page because that man page is autogenerated from the code that processes the options.

Unless you've got something in particular you're trying to do, I'd probably just leave it alone. :)



On Fri, Apr 13, 2018, at 1:21 AM, Nels Lindquist wrote:
> Hash: SHA1
> The man page for imapd.conf has this to say regarding
> "mailbox_default_options":
> > Default “options” field for the mailbox on create. You’ll want to 
> > know what you’re doing before setting this, but it can apply some 
> > default annotations like duplicate supression
> Well, I don't know what I'm doing and I'm not finding anything in the
> documentation (or Google) to help.
> What's the syntax for this directive?
> Thanks,
> Nels Lindquist <nlindq at>
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