diff --git a/plexpy/newsletters.py b/plexpy/newsletters.py
index e9c7c494..6402a46f 100644
--- a/plexpy/newsletters.py
+++ b/plexpy/newsletters.py
@@ -470,18 +470,24 @@ class Newsletter(object):
         if self.config['formatted']:
             newsletter_stripped = ''.join(l.strip() for l in self.newsletter.splitlines())
 
+            plaintext = 'HTML email support is required to view the newsletter.\n'
+            if plexpy.CONFIG.NEWSLETTER_SELF_HOSTED and plexpy.CONFIG.HTTP_BASE_URL:
+                plaintext += self._DEFAULT_BODY.format(**self.parameters)
+
             if self.email_config['notifier_id']:
                 return send_notification(
                     notifier_id=self.email_config['notifier_id'],
                     subject=self.subject_formatted,
-                    body=newsletter_stripped
+                    body=newsletter_stripped,
+                    plaintext=plaintext
                 )
 
             else:
                 email = EMAIL(config=self.email_config)
                 return email.notify(
                     subject=self.subject_formatted,
-                    body=newsletter_stripped
+                    body=newsletter_stripped,
+                    plaintext=plaintext
                 )
         elif self.config['notifier_id']:
             return send_notification(
diff --git a/plexpy/notifiers.py b/plexpy/notifiers.py
index 2912b64d..4662b5e0 100644
--- a/plexpy/notifiers.py
+++ b/plexpy/notifiers.py
@@ -1295,11 +1295,19 @@ class EMAIL(Notifier):
 
     def agent_notify(self, subject='', body='', action='', **kwargs):
         if self.config['html_support']:
+            plain = MIMEText(None, 'plain', 'utf-8')
+            plain.replace_header('Content-Transfer-Encoding', 'quoted-printable')
+            plain.set_payload(kwargs.get('plaintext', bleach.clean(body, strip=True)), 'utf-8')
+
+            html = MIMEText(body, 'html', 'utf-8')
+
             msg = MIMEMultipart('alternative')
-            msg.attach(MIMEText(bleach.clean(body, strip=True), 'plain', 'utf-8'))
-            msg.attach(MIMEText(body, 'html', 'utf-8'))
+            msg.attach(plain)
+            msg.attach(html)
         else:
-            msg = MIMEText(body, 'plain', 'utf-8')
+            msg = MIMEText(None, 'plain', 'utf-8')
+            msg.replace_header('Content-Transfer-Encoding', 'quoted-printable')
+            msg.set_payload(body, 'utf-8')
 
         msg['Message-ID'] = email.utils.make_msgid()
         msg['Date'] = email.utils.formatdate(localtime=True)