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
@@ -702,6 +702,33 @@
     return implode("\n", $block);
   }
 
+  public function getMailTagsMap() {
+    return array(
+      PhabricatorAuditTransaction::MAILTAG_COMMIT =>
+        pht('A commit is created.'),
+      PhabricatorAuditTransaction::MAILTAG_ACTION_CONCERN =>
+        pht('A commit has a concerned raised against it.'),
+      PhabricatorAuditTransaction::MAILTAG_ACTION_ACCEPT =>
+        pht('A commit is accepted.'),
+      PhabricatorAuditTransaction::MAILTAG_ACTION_RESIGN =>
+        pht('A commit has an auditor resign.'),
+      PhabricatorAuditTransaction::MAILTAG_ACTION_CLOSE =>
+        pht('A commit is closed.'),
+      PhabricatorAuditTransaction::MAILTAG_ADD_AUDITORS =>
+        pht('A commit has auditors added.'),
+      PhabricatorAuditTransaction::MAILTAG_ADD_CCS =>
+        pht("A commit's subscribers change."),
+      PhabricatorAuditTransaction::MAILTAG_PROJECTS =>
+        pht("A commit's projects change."),
+      PhabricatorAuditTransaction::MAILTAG_COMMENT =>
+        pht('Someone comments on a commit.'),
+      PhabricatorAuditTransaction::MAILTAG_OTHER =>
+        pht('Other commit activity not listed above occurs.'),
+    );
+  }
+
+
+
   protected function shouldPublishFeedStory(
     PhabricatorLiskDAO $object,
     array $xactions) {
diff --git a/src/applications/audit/storage/PhabricatorAuditTransaction.php b/src/applications/audit/storage/PhabricatorAuditTransaction.php
--- a/src/applications/audit/storage/PhabricatorAuditTransaction.php
+++ b/src/applications/audit/storage/PhabricatorAuditTransaction.php
@@ -5,6 +5,17 @@
 
   const TYPE_COMMIT = 'audit:commit';
 
+  const MAILTAG_ACTION_CONCERN = 'audit-action-concern';
+  const MAILTAG_ACTION_ACCEPT  = 'audit-action-accept';
+  const MAILTAG_ACTION_RESIGN  = 'audit-action-resign';
+  const MAILTAG_ACTION_CLOSE   = 'audit-action-close';
+  const MAILTAG_ADD_AUDITORS   = 'audit-add-auditors';
+  const MAILTAG_ADD_CCS        = 'audit-add-ccs';
+  const MAILTAG_COMMENT        = 'audit-comment';
+  const MAILTAG_COMMIT         = 'audit-commit';
+  const MAILTAG_PROJECTS       = 'audit-projects';
+  const MAILTAG_OTHER          = 'audit-other';
+
   public function getApplicationName() {
     return 'audit';
   }
@@ -403,4 +414,55 @@
     return parent::getBodyForMail();
   }
 
+  public function getMailTags() {
+    $tags = array();
+    switch ($this->getTransactionType()) {
+      case PhabricatorAuditActionConstants::ACTION:
+        switch ($this->getNewValue()) {
+          case PhabricatorAuditActionConstants::CONCERN:
+            $tags[] = self::MAILTAG_ACTION_CONCERN;
+            break;
+          case PhabricatorAuditActionConstants::ACCEPT:
+            $tags[] = self::MAILTAG_ACTION_ACCEPT;
+            break;
+          case PhabricatorAuditActionConstants::RESIGN:
+            $tags[] = self::MAILTAG_ACTION_RESIGN;
+            break;
+          case PhabricatorAuditActionConstants::CLOSE:
+            $tags[] = self::MAILTAG_ACTION_CLOSE;
+            break;
+        }
+        break;
+      case PhabricatorAuditActionConstants::ADD_AUDITORS:
+        $tags[] = self::MAILTAG_ADD_AUDITORS;
+        break;
+      case PhabricatorAuditActionConstants::ADD_CCS:
+        $tags[] = self::MAILTAG_ADD_CCS;
+        break;
+      case PhabricatorAuditActionConstants::INLINE:
+      case PhabricatorTransactions::TYPE_COMMENT:
+        $tags[] = self::MAILTAG_COMMENT;
+        break;
+      case self::TYPE_COMMIT:
+        $tags[] = self::MAILTAG_COMMIT;
+        break;
+      case PhabricatorTransactions::TYPE_EDGE:
+        switch ($this->getMetadataValue('edge:type')) {
+          case PhabricatorProjectObjectHasProjectEdgeType::EDGECONST:
+            $tags[] = self::MAILTAG_PROJECTS;
+            break;
+          case PhabricatorEdgeConfig::TYPE_OBJECT_HAS_SUBSCRIBER:
+            $tags[] = self::MAILTAG_ADD_CCS;
+            break;
+          default:
+            $tags[] = self::MAILTAG_OTHER;
+            break;
+        }
+        break;
+      default:
+        $tags[] = self::MAILTAG_OTHER;
+        break;
+    }
+    return $tags;
+  }
 }