MAILBOX[name=[[us-ascii,mailbox1]],email=mailbox@one]
GROUP[name=[[us-ascii,group1]]]
* MAILBOX[name=[],email=mailbox1@group1]
* MAILBOX[name=[],email=mailbox2@group2]
* MAILBOX[name=[[us-ascii,mailbox #3]],email=mailbox3@group2]
MAILBOX[name=[],email=mailbox@two]
MAILBOX[name=[[iso-8859-1,mailbox number 3]],email=mailbox@three]
MAILBOX[name=[[abc,mailbox],[def, number 4]],email=mailbox@four]