The function vm-imap-folder-p is in vm-save which doesn't seem to be autoloaded when vm is started. This causes an error for me since I use vm-imap-folder-p in the vm-mode-hook. I can of course avoid this error by running (require 'vm-save) first but should this be necessary?
I.e. isn't vm-imap-folder-p an important enough predicate that it should just be there initially and shouldn't require manual loading of vm-save
