diff --git a/package.json b/package.json
index 2b97a02..0516db8 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "siteforge",
   "private": true,
-  "version": "2.3.0",
+  "version": "2.3.1",
   "type": "module",
   "scripts": {
     "dev": "vite",
diff --git a/server/routes/newsletter.js b/server/routes/newsletter.js
index 780b065..bc8a67c 100644
--- a/server/routes/newsletter.js
+++ b/server/routes/newsletter.js
@@ -76,6 +76,15 @@ function buildIssuePageHtml(issue) {
 <meta name="twitter:description" content="${description}"/>
 <meta name="twitter:image" content="${escapeHtml(ogImage)}"/>
 <link rel="canonical" href="${escapeHtml(canonical)}"/>
+<style>
+/* The source HTML is a Resend/React Email template built for a narrow email-client
+   viewport: its outer wrapper table uses align="left" (which browsers translate to
+   float: left) and relies on the surrounding white to be invisible in a ~600px inbox
+   pane. In a full-width browser tab that leaves a left-stuck column on a white field.
+   Force it to sit centered on the site's dark background instead. */
+html, body { background-color: #0a0a08 !important; margin: 0; padding: 0; }
+table[align="left"] { float: none !important; margin-left: auto !important; margin-right: auto !important; }
+</style>
 </head>`
 
   const ctaBlock = `