Set email charset as utf-8 rather than utf8 (#16329)

jjatria · web-flow · commit 6946209e671e · 2023-09-18T07:32:01.000-04:00
diff --git a/changelog.d/16329.bugfix b/changelog.d/16329.bugfix
@@ -0,0 +1 @@
+Use standard name for UTF-8 charset in emails.
diff --git a/synapse/handlers/send_email.py b/synapse/handlers/send_email.py
@@ -174,8 +174,8 @@ async def send_email(
         if raw_to == "":
             raise RuntimeError("Invalid 'to' address")
 
-        html_part = MIMEText(html, "html", "utf8")
-        text_part = MIMEText(text, "plain", "utf8")
+        html_part = MIMEText(html, "html", "utf-8")
+        text_part = MIMEText(text, "plain", "utf-8")
 
         multipart_msg = MIMEMultipart("alternative")
         multipart_msg["Subject"] = subject

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+Use standard name for UTF-8 charset in emails.`