+#define g_mime_message_set_subject(m,s) g_mime_message_set_subject(m,s,NULL)
+#define g_mime_multipart_signed_verify(mps,ctx,err) g_mime_multipart_signed_verify(mps, GMIME_ENCRYPT_NONE, err)
+#define g_mime_object_write_to_stream(o,s) g_mime_object_write_to_stream (o,NULL,s)
+#define g_mime_object_set_header(o,h,v) g_mime_object_set_header (o,h,v,NULL)
+#define g_mime_parser_construct_message(p) g_mime_parser_construct_message (p, g_mime_parser_options_get_default ())
+#define g_mime_utils_header_decode_text(txt) g_mime_utils_header_decode_text (NULL, txt)
+#define internet_address_to_string(ia,encode) internet_address_to_string (ia,NULL,encode)
+#define internet_address_list_parse_string(str) internet_address_list_parse (NULL,str)
+
+/**
+ * Get last 16 hex digits of fingerprint ("keyid")
+ */
+const char *g_mime_certificate_get_fpr16 (GMimeCertificate *cert);
+/**
+ * Return the contents of the appropriate address header as a string
+ * Should be freed using g_free
+ */
+char *g_mime_message_get_address_string (GMimeMessage *message, GMimeAddressType type);
+
+InternetAddressList * g_mime_message_get_addresses (GMimeMessage *message, GMimeAddressType type);