diff --git a/templates/zerver/emails/email.css b/templates/zerver/emails/email.css
index 562d54a4e2..dde678ff8f 100644
--- a/templates/zerver/emails/email.css
+++ b/templates/zerver/emails/email.css
@@ -107,6 +107,15 @@ table.layout > tbody > tr > td {
     text-align: center;
 }
 
+/*
+  Styles for the content section of Zulip newsletters and other custom emails.
+*/
+.custom-email-content h1 {
+    font-size: 1.6em;
+    margin-top: 25px;
+    margin-bottom: 5px;
+}
+
 .content ul,
 .content ol {
     /* Override excessive indentation seen in Gmail. */
diff --git a/templates/zerver/emails/email_base_marketing.html b/templates/zerver/emails/email_base_marketing.html
index 796dad87be..552d446a09 100644
--- a/templates/zerver/emails/email_base_marketing.html
+++ b/templates/zerver/emails/email_base_marketing.html
@@ -25,7 +25,7 @@
                                 <td class="wrapper">
                                     <table border="0" cellpadding="0" cellspacing="0" class="layout">
                                         <tr>
-                                            <td>
+                                            <td class="custom-email-content">
                                                 {% block content %}{% endblock %}
                                             </td>
                                         </tr>