--- a/src/deliver.c
+++ b/src/deliver.c
-@@ -7373,7 +7373,7 @@
+@@ -5696,7 +5696,7 @@
+
+ /* output human readable part as text/plain section */
+ fprintf(fp, "--%s\n"
+- "Content-type: text/plain; charset=us-ascii\n\n",
++ "Content-type: text/plain; charset=utf-8\n\n",
+ bound);
+
+ if ((emf_text = next_emf(emf, US"intro")))
+@@ -6066,7 +6066,7 @@
+
+ /* output human readable part as text/plain section */
+ fprintf(f, "--%s\n"
+- "Content-type: text/plain; charset=us-ascii\n\n",
++ "Content-type: text/plain; charset=utf-8\n\n",
+ bound);
+
+ if ((wmf_text = next_emf(wmf, US"intro")))
+@@ -6281,7 +6281,7 @@
"MIME-Version: 1.0\n\n"
"--%s\n"
"This message was created automatically by mail delivery software.\n"
" ----- The following addresses had successful delivery notifications -----\n",
-@@ -7644,7 +7644,7 @@
-
- /* output human readable part as text/plain section */
- fprintf(fp, "--%s\n"
-- "Content-type: text/plain; charset=us-ascii\n\n",
-+ "Content-type: text/plain; charset=utf-8\n\n",
- bound);
-
- if ((emf_text = next_emf(emf, US"intro")))
-@@ -8252,7 +8252,7 @@
-
- /* output human readable part as text/plain section */
- fprintf(f, "--%s\n"
-- "Content-type: text/plain; charset=us-ascii\n\n",
-+ "Content-type: text/plain; charset=utf-8\n\n",
- bound);
-
- if ((wmf_text = next_emf(wmf, US"intro")))