diff --git a/src/markup/engine/remarkup/blockrule/PhutilRemarkupQuotesBlockRule.php b/src/markup/engine/remarkup/blockrule/PhutilRemarkupQuotesBlockRule.php
index c74afc6..6b0dc3f 100644
--- a/src/markup/engine/remarkup/blockrule/PhutilRemarkupQuotesBlockRule.php
+++ b/src/markup/engine/remarkup/blockrule/PhutilRemarkupQuotesBlockRule.php
@@ -1,51 +1,65 @@
 <?php
 
 final class PhutilRemarkupQuotesBlockRule extends PhutilRemarkupBlockRule {
 
   public function getMatchingLineCount(array $lines, $cursor) {
     $pos = $cursor;
 
     if (preg_match('/^>/', $lines[$pos])) {
       do {
         ++$pos;
       } while (isset($lines[$pos]) && preg_match('/^>/', $lines[$pos]));
     }
 
     return ($pos - $cursor);
   }
 
   public function supportsChildBlocks() {
     return true;
   }
 
   public function extractChildText($text) {
     $text = phutil_split_lines($text, true);
     foreach ($text as $key => $line) {
       $text[$key] = substr($line, 1);
     }
 
     return array('', implode('', $text));
   }
 
   public function markupText($text, $children) {
     if ($this->getEngine()->isTextMode()) {
       $lines = rtrim($children, "\n");
       $lines = phutil_split_lines($lines);
       foreach ($lines as $key => $line) {
         if (isset($line[0]) && ($line[0] == '>')) {
           $line = '>'.$line;
         } else {
           $line = '> '.$line;
         }
         $lines[$key] = $line;
       }
       return implode('', $lines);
     }
 
+    $attributes = array();
+    if ($this->getEngine()->isHTMLMailMode()) {
+      $style = array(
+        'border-left: 3px solid #a7b5bf;',
+        'color: #464c5c;',
+        'font-style: italic;',
+        'margin: 4px 0 12px 0;',
+        'padding: 4px 12px;',
+        'background-color: #f8f9fc;',
+      );
+
+      $attributes['style'] = implode(' ', $style);
+    }
+
     return phutil_tag(
       'blockquote',
-      array(),
+      $attributes,
       $children);
   }
 
 }