- if ((mailto != NULL) && (strlen(mailto) > 0))
- tny_header_set_to (TNY_HEADER (header), mailto);
+ if ((mailto != NULL) && (strlen(mailto) > 0)) {
+ gchar *removed_to = modest_text_utils_remove_duplicate_addresses (mailto);
+ tny_header_set_to (TNY_HEADER (header), removed_to);
+ g_free (removed_to);
+ }