Index: src/__phutil_library_map__.php
===================================================================
--- src/__phutil_library_map__.php
+++ src/__phutil_library_map__.php
@@ -1924,6 +1924,7 @@
     'PhabricatorSetupCheckAuth' => 'applications/config/check/PhabricatorSetupCheckAuth.php',
     'PhabricatorSetupCheckBaseURI' => 'applications/config/check/PhabricatorSetupCheckBaseURI.php',
     'PhabricatorSetupCheckBinaries' => 'applications/config/check/PhabricatorSetupCheckBinaries.php',
+    'PhabricatorSetupCheckDaemons' => 'applications/config/check/PhabricatorSetupCheckDaemons.php',
     'PhabricatorSetupCheckDatabase' => 'applications/config/check/PhabricatorSetupCheckDatabase.php',
     'PhabricatorSetupCheckExtensions' => 'applications/config/check/PhabricatorSetupCheckExtensions.php',
     'PhabricatorSetupCheckExtraConfig' => 'applications/config/check/PhabricatorSetupCheckExtraConfig.php',
@@ -4564,6 +4565,7 @@
     'PhabricatorSetupCheckAuth' => 'PhabricatorSetupCheck',
     'PhabricatorSetupCheckBaseURI' => 'PhabricatorSetupCheck',
     'PhabricatorSetupCheckBinaries' => 'PhabricatorSetupCheck',
+    'PhabricatorSetupCheckDaemons' => 'PhabricatorSetupCheck',
     'PhabricatorSetupCheckDatabase' => 'PhabricatorSetupCheck',
     'PhabricatorSetupCheckExtensions' => 'PhabricatorSetupCheck',
     'PhabricatorSetupCheckExtraConfig' => 'PhabricatorSetupCheck',
Index: src/applications/config/check/PhabricatorSetupCheckDaemons.php
===================================================================
--- /dev/null
+++ src/applications/config/check/PhabricatorSetupCheckDaemons.php
@@ -0,0 +1,46 @@
+<?php
+
+final class PhabricatorSetupCheckDaemons extends PhabricatorSetupCheck {
+
+  protected function executeChecks() {
+
+    $task_daemon = id(new PhabricatorDaemonLogQuery())
+      ->setViewer(PhabricatorUser::getOmnipotentUser())
+      ->withStatus(PhabricatorDaemonLogQuery::STATUS_ALIVE)
+      ->withDaemonClasses(array('PhabricatorTaskmasterDaemon'))
+      ->setLimit(1)
+      ->execute();
+
+    if (!$task_daemon) {
+      $doc_href = PhabricatorEnv::getDocLink(
+        'article/Managing_Daemons_with_phd.html');
+
+      $summary = pht(
+        'You must start the Phabricator daemons to send email, rebuild '.
+        'search indexes, and do other background processing.');
+
+      $message = pht(
+        'The Phabricator daemons are not running, so Phabricator will not '.
+        'be able to perform background processing (including sending email, '.
+        'rebuilding search indexes, importing commits, cleaning up old data, '.
+        'running builds, etc.).'.
+        "\n\n".
+        'Use %s to start daemons. See %s for more information.',
+        phutil_tag('tt', array(), 'bin/phd start'),
+        phutil_tag(
+          'a',
+          array(
+            'href' => $doc_href,
+          ),
+          pht('Managing Daemons with phd')));
+
+      $this->newIssue('daemons.not-running')
+        ->setShortName(pht('Daemons Not Running'))
+        ->setName(pht('Phabricator Daemons Are Not Running'))
+        ->setSummary($summary)
+        ->setMessage($message)
+        ->addCommand('phabricator/ $ ./bin/phd start');
+    }
+
+  }
+}