*** a/loader/lib/parser.py
--- b/loader/lib/parser.py
***************
*** 410,426 **** class ArchivesParser(object):
  			raise IgnorableException("Failed to parse date '%s': %s" % (d, e))
  
  	# Workaround for broken quoting in some MUAs (see below)
  	_re_mailworkaround = re.compile('"(=\?[^\?]+\?[QB]\?[^\?]+\?=)"', re.IGNORECASE)
  	def _decode_mime_header(self, hdr, email_workaround):
  		if hdr == None:
  			return None
  
! 		# Per http://bugs.python.org/issue504152 (and lots of testing), it seems
! 		# we must get rid of the sequence \n\t at least in the header. If we
! 		# do this *before* doing any MIME decoding, we should be safe against
! 		# anybody *actually* putting that sequence in the header (since we
! 		# won't match the encoded contents)
! 		hdr = hdr.replace("\n\t","")
  
  		# In at least some cases, at least gmail (and possibly other MUAs)
  		# incorrectly put double quotes in the name/email field even when
--- 410,427 ----
  			raise IgnorableException("Failed to parse date '%s': %s" % (d, e))
  
  	# Workaround for broken quoting in some MUAs (see below)
+ 	_re_unfold = re.compile(r'\n(?=[ \t])')
  	_re_mailworkaround = re.compile('"(=\?[^\?]+\?[QB]\?[^\?]+\?=)"', re.IGNORECASE)
  	def _decode_mime_header(self, hdr, email_workaround):
  		if hdr == None:
  			return None
  
! 		# Perform RFC 5322 header field unfolding. If we do this *before*
! 		# doing any MIME decoding, we should be safe against anybody
! 		# *actually* putting that sequence in the header (since we won't
! 		# match the encoded contents). Python's email package dubiously
! 		# declines to do this for us: http://bugs.python.org/issue504152
! 		hdr = self._re_unfold.sub('', hdr)
  
  		# In at least some cases, at least gmail (and possibly other MUAs)
  		# incorrectly put double quotes in the name/email field even when