old_contents: from django.conf import settings
  from django.contrib import admin
  
  from django_mailbox.models import MessageAttachment, Message, Mailbox
  
  def get_new_mail(mailbox_admin, request, queryset):
      for mailbox in queryset.all():
          mailbox.get_new_mail()
  get_new_mail.short_description = 'Get new mail'
  
  class MailboxAdmin(admin.ModelAdmin):
      list_display = (
                  'name',
                  'uri',
                  'from_email',
                  'active',
              )
      actions = [get_new_mail]
  
  class MessageAttachmentAdmin(admin.ModelAdmin):
      pass
  
  class MessageAdmin(admin.ModelAdmin):
      list_display = (
                  'subject',
                  'processed',
                  'mailbox',
                  'outgoing',
              )
      ordering = ['-processed']
      list_filter = (
              'mailbox',
              'outgoing',
              )
      raw_id_fields = (
              'in_reply_to',
              )
  
  if getattr(settings, 'DJANGO_MAILBOX_ADMIN_ENABLED', True):
      admin.site.register(Message, MessageAdmin)
      admin.site.register(MessageAttachmentAdmin, MessageAttachment)
      admin.site.register(Mailbox, MailboxAdmin)
  
new_contents: from django.conf import settings
  from django.contrib import admin
  
  from django_mailbox.models import MessageAttachment, Message, Mailbox
  
  def get_new_mail(mailbox_admin, request, queryset):
      for mailbox in queryset.all():
          mailbox.get_new_mail()
  get_new_mail.short_description = 'Get new mail'
  
  class MailboxAdmin(admin.ModelAdmin):
      list_display = (
                  'name',
                  'uri',
                  'from_email',
                  'active',
              )
      actions = [get_new_mail]
  
  class MessageAttachmentAdmin(admin.ModelAdmin):
      pass
  
  class MessageAdmin(admin.ModelAdmin):
      list_display = (
                  'subject',
                  'processed',
                  'mailbox',
                  'outgoing',
              )
      ordering = ['-processed']
      list_filter = (
              'mailbox',
              'outgoing',
              )
      raw_id_fields = (
              'in_reply_to',
              )
  
  if getattr(settings, 'DJANGO_MAILBOX_ADMIN_ENABLED', True):
      admin.site.register(Message, MessageAdmin)
      admin.site.register(MessageAttachment, MessageAttachmentAdmin)
      admin.site.register(Mailbox, MailboxAdmin)
  
subject: Add admin support for attachments --fix typo