diff --git a/app/courrier/page.tsx b/app/courrier/page.tsx
index 655c359f..b20e4bca 100644
--- a/app/courrier/page.tsx
+++ b/app/courrier/page.tsx
@@ -532,11 +532,31 @@ function renderEmailContent(email: Email) {
     ));
 
     return (
-      <div className="prose max-w-none">
+      <div className="prose max-w-none dark:prose-invert">
         {isHtml ? (
-          <div dangerouslySetInnerHTML={{ __html: content }} />
+          <div 
+            className="prose prose-sm sm:prose lg:prose-lg xl:prose-xl dark:prose-invert max-w-none"
+            dangerouslySetInnerHTML={{ 
+              __html: content
+                .replace(/<style[^>]*>[\s\S]*?<\/style>/gi, '')
+                .replace(/<script[^>]*>[\s\S]*?<\/script>/gi, '')
+                .replace(/<base[^>]*>/gi, '')
+                .replace(/<meta[^>]*>/gi, '')
+                .replace(/<link[^>]*>/gi, '')
+                .replace(/<title[^>]*>[\s\S]*?<\/title>/gi, '')
+                .replace(/<head[^>]*>[\s\S]*?<\/head>/gi, '')
+                .replace(/<body[^>]*>/gi, '')
+                .replace(/<\/body>/gi, '')
+                .replace(/<html[^>]*>/gi, '')
+                .replace(/<\/html>/gi, '')
+            }} 
+          />
         ) : (
-          <div className="whitespace-pre-wrap">{content}</div>
+          <div className="whitespace-pre-wrap font-sans text-base leading-relaxed">
+            {content.split('\n').map((line, i) => (
+              <p key={i} className="mb-2">{line}</p>
+            ))}
+          </div>
         )}
         {attachmentElements}
       </div>