diff --git a/src/applications/metamta/view/PhabricatorMetaMTAMailBody.php b/src/applications/metamta/view/PhabricatorMetaMTAMailBody.php
--- a/src/applications/metamta/view/PhabricatorMetaMTAMailBody.php
+++ b/src/applications/metamta/view/PhabricatorMetaMTAMailBody.php
@@ -13,6 +13,7 @@
   private $attachments = array();
 
   private $viewer;
+  private $contextObject;
 
   public function getViewer() {
     return $this->viewer;
@@ -23,6 +24,16 @@
     return $this;
   }
 
+  public function setContextObject($context_object) {
+    $this->contextObject = $context_object;
+    return $this;
+  }
+
+  public function getContextObject() {
+    return $this->contextObject;
+  }
+
+
 /* -(  Composition  )-------------------------------------------------------- */
 
 
@@ -45,9 +56,9 @@
 
   public function addRemarkupSection($header, $text) {
     try {
-      $engine = PhabricatorMarkupEngine::newMarkupEngine(array());
-      $engine->setConfig('viewer', $this->getViewer());
-      $engine->setMode(PhutilRemarkupEngine::MODE_TEXT);
+      $engine = $this->newMarkupEngine()
+        ->setMode(PhutilRemarkupEngine::MODE_TEXT);
+
       $styled_text = $engine->markupText($text);
       $this->addPlaintextSection($header, $styled_text);
     } catch (Exception $ex) {
@@ -56,12 +67,9 @@
     }
 
     try {
-      $mail_engine = PhabricatorMarkupEngine::newMarkupEngine(array());
-      $mail_engine->setConfig('viewer', $this->getViewer());
-      $mail_engine->setMode(PhutilRemarkupEngine::MODE_HTML_MAIL);
-      $mail_engine->setConfig(
-        'uri.base',
-        PhabricatorEnv::getProductionURI('/'));
+      $mail_engine = $this->newMarkupEngine()
+        ->setMode(PhutilRemarkupEngine::MODE_HTML_MAIL);
+
       $html = $mail_engine->markupText($text);
       $this->addHTMLSection($header, $html);
     } catch (Exception $ex) {
@@ -215,4 +223,19 @@
   private function indent($text) {
     return rtrim("  ".str_replace("\n", "\n  ", $text));
   }
+
+
+  private function newMarkupEngine() {
+    $engine = PhabricatorMarkupEngine::newMarkupEngine(array())
+      ->setConfig('viewer', $this->getViewer())
+      ->setConfig('uri.base', PhabricatorEnv::getProductionURI('/'));
+
+    $context = $this->getContextObject();
+    if ($context) {
+      $engine->setConfig('contextObject', $context);
+    }
+
+    return $engine;
+  }
+
 }
diff --git a/src/applications/phriction/markup/PhrictionRemarkupRule.php b/src/applications/phriction/markup/PhrictionRemarkupRule.php
--- a/src/applications/phriction/markup/PhrictionRemarkupRule.php
+++ b/src/applications/phriction/markup/PhrictionRemarkupRule.php
@@ -28,17 +28,7 @@
 
     // Handle relative links.
     if ((substr($link, 0, 2) === './') || (substr($link, 0, 3) === '../')) {
-      $base = null;
-      $context = $this->getEngine()->getConfig('contextObject');
-      if ($context !== null && $context instanceof PhrictionContent) {
-        // Handle content when it's being rendered in document view.
-        $base = $context->getSlug();
-      }
-      if ($context !== null && is_array($context) &&
-          idx($context, 'phriction.isPreview')) {
-        // Handle content when it's a preview for the Phriction editor.
-        $base = idx($context, 'phriction.slug');
-      }
+      $base = $this->getRelativeBaseURI();
       if ($base !== null) {
         $base_parts = explode('/', rtrim($base, '/'));
         $rel_parts = explode('/', rtrim($link, '/'));
@@ -195,4 +185,30 @@
     }
   }
 
+  private function getRelativeBaseURI() {
+    $context = $this->getEngine()->getConfig('contextObject');
+
+    if (!$context) {
+      return null;
+    }
+
+    // Handle content when it's a preview for the Phriction editor.
+    if (is_array($context)) {
+      if (idx($context, 'phriction.isPreview')) {
+        return idx($context, 'phriction.slug');
+      }
+    }
+
+    if ($context instanceof PhrictionContent) {
+      return $context->getSlug();
+    }
+
+    if ($context instanceof PhrictionDocument) {
+      return $context->getSlug();
+    }
+
+    return null;
+  }
+
+
 }
diff --git a/src/applications/transactions/editor/PhabricatorApplicationTransactionEditor.php b/src/applications/transactions/editor/PhabricatorApplicationTransactionEditor.php
--- a/src/applications/transactions/editor/PhabricatorApplicationTransactionEditor.php
+++ b/src/applications/transactions/editor/PhabricatorApplicationTransactionEditor.php
@@ -2880,11 +2880,13 @@
     PhabricatorLiskDAO $object,
     array $xactions) {
 
-    $body = new PhabricatorMetaMTAMailBody();
-    $body->setViewer($this->requireActor());
+    $body = id(new PhabricatorMetaMTAMailBody())
+      ->setViewer($this->requireActor())
+      ->setContextObject($object);
 
     $this->addHeadersAndCommentsToMailBody($body, $xactions);
     $this->addCustomFieldsToMailBody($body, $object, $xactions);
+
     return $body;
   }