diff --git a/src/applications/audit/editor/PhabricatorAuditEditor.php b/src/applications/audit/editor/PhabricatorAuditEditor.php
--- a/src/applications/audit/editor/PhabricatorAuditEditor.php
+++ b/src/applications/audit/editor/PhabricatorAuditEditor.php
@@ -660,7 +660,7 @@
     }
 
     if ($inlines) {
-      $body->addTextSection(
+      $body->addRemarkupSection(
         pht('INLINE COMMENTS'),
         $this->renderInlineCommentsForMail($object, $inlines));
     }
diff --git a/src/applications/badges/editor/PhabricatorBadgesEditor.php b/src/applications/badges/editor/PhabricatorBadgesEditor.php
--- a/src/applications/badges/editor/PhabricatorBadgesEditor.php
+++ b/src/applications/badges/editor/PhabricatorBadgesEditor.php
@@ -194,7 +194,7 @@
     $body = parent::buildMailBody($object, $xactions);
 
     if (strlen($description)) {
-      $body->addTextSection(
+      $body->addRemarkupSeciton(
         pht('BADGE DESCRIPTION'),
         $object->getDescription());
     }
diff --git a/src/applications/countdown/editor/PhabricatorCountdownEditor.php b/src/applications/countdown/editor/PhabricatorCountdownEditor.php
--- a/src/applications/countdown/editor/PhabricatorCountdownEditor.php
+++ b/src/applications/countdown/editor/PhabricatorCountdownEditor.php
@@ -173,7 +173,7 @@
     $description = $object->getDescription();
 
     if (strlen($description)) {
-      $body->addTextSection(
+      $body->addRemarkupSection(
         pht('COUNTDOWN DESCRIPTION'),
         $object->getDescription());
     }
diff --git a/src/applications/differential/customfield/DifferentialSummaryField.php b/src/applications/differential/customfield/DifferentialSummaryField.php
--- a/src/applications/differential/customfield/DifferentialSummaryField.php
+++ b/src/applications/differential/customfield/DifferentialSummaryField.php
@@ -165,7 +165,7 @@
       return;
     }
 
-    $body->addTextSection(pht('REVISION SUMMARY'), $summary);
+    $body->addRemarkupSection(pht('REVISION SUMMARY'), $summary);
   }
 
 }
diff --git a/src/applications/differential/customfield/DifferentialTestPlanField.php b/src/applications/differential/customfield/DifferentialTestPlanField.php
--- a/src/applications/differential/customfield/DifferentialTestPlanField.php
+++ b/src/applications/differential/customfield/DifferentialTestPlanField.php
@@ -195,7 +195,7 @@
       return;
     }
 
-    $body->addTextSection(pht('TEST PLAN'), $test_plan);
+    $body->addRemarkupSection(pht('TEST PLAN'), $test_plan);
   }
 
 
diff --git a/src/applications/differential/editor/DifferentialTransactionEditor.php b/src/applications/differential/editor/DifferentialTransactionEditor.php
--- a/src/applications/differential/editor/DifferentialTransactionEditor.php
+++ b/src/applications/differential/editor/DifferentialTransactionEditor.php
@@ -1212,7 +1212,7 @@
     }
 
     if ($inlines) {
-      $body->addTextSection(
+      $body->addRemarkupSection(
         pht('INLINE COMMENTS'),
         $this->renderInlineCommentsForMail($object, $inlines));
     }
diff --git a/src/applications/maniphest/editor/ManiphestTransactionEditor.php b/src/applications/maniphest/editor/ManiphestTransactionEditor.php
--- a/src/applications/maniphest/editor/ManiphestTransactionEditor.php
+++ b/src/applications/maniphest/editor/ManiphestTransactionEditor.php
@@ -442,7 +442,7 @@
     $body = parent::buildMailBody($object, $xactions);
 
     if ($this->getIsNewObject()) {
-      $body->addTextSection(
+      $body->addRemarkupSection(
         pht('TASK DESCRIPTION'),
         $object->getDescription());
     }
diff --git a/src/applications/phriction/editor/PhrictionTransactionEditor.php b/src/applications/phriction/editor/PhrictionTransactionEditor.php
--- a/src/applications/phriction/editor/PhrictionTransactionEditor.php
+++ b/src/applications/phriction/editor/PhrictionTransactionEditor.php
@@ -419,7 +419,7 @@
     $body = parent::buildMailBody($object, $xactions);
 
     if ($this->getIsNewObject()) {
-      $body->addTextSection(
+      $body->addRemarkupSection(
         pht('DOCUMENT CONTENT'),
         $object->getContent()->getContent());
     } else if ($this->contentDiffURI) {
diff --git a/src/applications/phurl/editor/PhabricatorPhurlURLEditor.php b/src/applications/phurl/editor/PhabricatorPhurlURLEditor.php
--- a/src/applications/phurl/editor/PhabricatorPhurlURLEditor.php
+++ b/src/applications/phurl/editor/PhabricatorPhurlURLEditor.php
@@ -236,7 +236,7 @@
     $body = parent::buildMailBody($object, $xactions);
 
     if (strlen($description)) {
-      $body->addTextSection(
+      $body->addRemarkupSection(
         pht('URL DESCRIPTION'),
         $object->getDescription());
     }
diff --git a/src/applications/releeph/editor/ReleephRequestTransactionalEditor.php b/src/applications/releeph/editor/ReleephRequestTransactionalEditor.php
--- a/src/applications/releeph/editor/ReleephRequestTransactionalEditor.php
+++ b/src/applications/releeph/editor/ReleephRequestTransactionalEditor.php
@@ -249,7 +249,7 @@
     if ($has_pick_failure) {
       $instructions = $releeph_project->getDetail('pick_failure_instructions');
       if ($instructions) {
-        $body->addTextSection(
+        $body->addRemarkupSection(
           pht('PICK FAILURE INSTRUCTIONS'),
           $instructions);
       }
diff --git a/src/applications/slowvote/editor/PhabricatorSlowvoteEditor.php b/src/applications/slowvote/editor/PhabricatorSlowvoteEditor.php
--- a/src/applications/slowvote/editor/PhabricatorSlowvoteEditor.php
+++ b/src/applications/slowvote/editor/PhabricatorSlowvoteEditor.php
@@ -145,7 +145,7 @@
     $description = $object->getDescription();
 
     if (strlen($description)) {
-      $body->addTextSection(
+      $body->addRemarkupSection(
         pht('SLOWVOTE DESCRIPTION'),
         $object->getDescription());
     }