diff --git a/src/applications/harbormaster/query/HarbormasterBuildPlanQuery.php b/src/applications/harbormaster/query/HarbormasterBuildPlanQuery.php
--- a/src/applications/harbormaster/query/HarbormasterBuildPlanQuery.php
+++ b/src/applications/harbormaster/query/HarbormasterBuildPlanQuery.php
@@ -98,7 +98,7 @@
         $this->statuses);
     }
 
-    if (strlen($this->datasourceQuery)) {
+    if (!phutil_nonempty_string($this->datasourceQuery)) {
       $where[] = qsprintf(
         $conn,
         'plan.name LIKE %>',
diff --git a/src/applications/harbormaster/step/HarbormasterUploadArtifactBuildStepImplementation.php b/src/applications/harbormaster/step/HarbormasterUploadArtifactBuildStepImplementation.php
--- a/src/applications/harbormaster/step/HarbormasterUploadArtifactBuildStepImplementation.php
+++ b/src/applications/harbormaster/step/HarbormasterUploadArtifactBuildStepImplementation.php
@@ -8,7 +8,7 @@
   }
 
   public function getGenericDescription() {
-    return pht('Upload a file from a host to Phabricator.');
+    return pht('Upload a file.');
   }
 
   public function getBuildStepGroupKey() {
diff --git a/src/applications/legalpad/editor/LegalpadDocumentEditEngine.php b/src/applications/legalpad/editor/LegalpadDocumentEditEngine.php
--- a/src/applications/legalpad/editor/LegalpadDocumentEditEngine.php
+++ b/src/applications/legalpad/editor/LegalpadDocumentEditEngine.php
@@ -131,7 +131,7 @@
           ->setKey('requireSignature')
           ->setOptions(
             pht('No Signature Required'),
-            pht('Signature Required to use Phabricator'))
+            pht('Signature Required to Log In'))
           ->setAsCheckbox(true)
           ->setTransactionType(
             LegalpadDocumentRequireSignatureTransaction::TRANSACTIONTYPE)
diff --git a/src/applications/maniphest/config/PhabricatorManiphestConfigOptions.php b/src/applications/maniphest/config/PhabricatorManiphestConfigOptions.php
--- a/src/applications/maniphest/config/PhabricatorManiphestConfigOptions.php
+++ b/src/applications/maniphest/config/PhabricatorManiphestConfigOptions.php
@@ -218,7 +218,7 @@
 
 Statuses will appear in the UI in the order specified. Note the status marked
 `special` as `duplicate` is not settable directly and will not appear in UI
-elements, and that any status marked `silly` does not appear if Phabricator
+elements, and that any status marked `silly` does not appear if the software
 is configured with `phabricator.serious-business` set to true.
 
 Examining the default configuration and examples below will probably be helpful
diff --git a/src/applications/meta/controller/PhabricatorApplicationUninstallController.php b/src/applications/meta/controller/PhabricatorApplicationUninstallController.php
--- a/src/applications/meta/controller/PhabricatorApplicationUninstallController.php
+++ b/src/applications/meta/controller/PhabricatorApplicationUninstallController.php
@@ -38,7 +38,7 @@
         ->appendChild(
           pht(
             'To manage prototypes, enable them by setting %s in your '.
-            'Phabricator configuration.',
+            'configuration.',
             phutil_tag('tt', array(), 'phabricator.show-prototypes')));
       return id(new AphrontDialogResponse())->setDialog($dialog);
     }
@@ -98,9 +98,9 @@
             ->appendParagraph(
               pht(
                 'This is very unusual and will leave you without any '.
-                'content on the Phabricator home page. You should only '.
-                'do this if you are certain you know what you are doing.'))
-            ->addSubmitButton(pht('Completely Break Phabricator'));
+                'content on the home page. You should only do this if you '.
+                'are certain you know what you are doing.'))
+            ->addSubmitButton(pht('Completely Break Everything'));
         } else {
           $dialog
             ->appendParagraph(
@@ -114,8 +114,7 @@
           ->setTitle(pht('Information'))
           ->appendChild(
             pht(
-              'This application cannot be uninstalled, '.
-              'because it is required for Phabricator to work.'));
+              'This application is required and cannot be uninstalled.'));
       }
     }
     return id(new AphrontDialogResponse())->setDialog($dialog);
diff --git a/src/applications/metamta/adapter/PhabricatorMailTestAdapter.php b/src/applications/metamta/adapter/PhabricatorMailTestAdapter.php
--- a/src/applications/metamta/adapter/PhabricatorMailTestAdapter.php
+++ b/src/applications/metamta/adapter/PhabricatorMailTestAdapter.php
@@ -126,12 +126,12 @@
     $guts['headers'] = $header_list;
 
     $text_body = $message->getTextBody();
-    if (strlen($text_body)) {
+    if (phutil_nonempty_string($text_body)) {
       $guts['body'] = $text_body;
     }
 
     $html_body = $message->getHTMLBody();
-    if (strlen($html_body)) {
+    if (phutil_nonempty_string($html_body)) {
       $guts['html-body'] = $html_body;
     }
 
diff --git a/src/applications/metamta/constants/MetaMTAReceivedMailStatus.php b/src/applications/metamta/constants/MetaMTAReceivedMailStatus.php
--- a/src/applications/metamta/constants/MetaMTAReceivedMailStatus.php
+++ b/src/applications/metamta/constants/MetaMTAReceivedMailStatus.php
@@ -21,7 +21,7 @@
   public static function getHumanReadableName($status) {
     $map = array(
       self::STATUS_DUPLICATE => pht('Duplicate Message'),
-      self::STATUS_FROM_PHABRICATOR => pht('Phabricator Mail'),
+      self::STATUS_FROM_PHABRICATOR => pht('Mail From Self'),
       self::STATUS_NO_RECEIVERS => pht('No Receivers'),
       self::STATUS_UNKNOWN_SENDER => pht('Unknown Sender'),
       self::STATUS_DISABLED_SENDER => pht('Disabled Sender'),
diff --git a/src/applications/metamta/controller/PhabricatorMetaMTAMailViewController.php b/src/applications/metamta/controller/PhabricatorMetaMTAMailViewController.php
--- a/src/applications/metamta/controller/PhabricatorMetaMTAMailViewController.php
+++ b/src/applications/metamta/controller/PhabricatorMetaMTAMailViewController.php
@@ -428,7 +428,7 @@
     if ($actor_phid) {
       $actor_str = $viewer->renderHandle($actor_phid);
     } else {
-      $actor_str = pht('Generated by Phabricator');
+      $actor_str = pht('Generated by Server');
     }
     $properties->addProperty(pht('Actor'), $actor_str);
 
diff --git a/src/applications/metamta/engine/PhabricatorMailEmailEngine.php b/src/applications/metamta/engine/PhabricatorMailEmailEngine.php
--- a/src/applications/metamta/engine/PhabricatorMailEmailEngine.php
+++ b/src/applications/metamta/engine/PhabricatorMailEmailEngine.php
@@ -119,6 +119,8 @@
     }
 
     $body_limit = PhabricatorEnv::getEnvConfig('metamta.email-body-limit');
+
+    $body = phutil_string_cast($body);
     if (strlen($body) > $body_limit) {
       $body = id(new PhutilUTF8StringTruncator())
         ->setMaximumBytes($body_limit)
@@ -143,7 +145,7 @@
 
     if ($send_html) {
       $html_body = $mail->getHTMLBody();
-      if (strlen($html_body)) {
+      if (phutil_nonempty_string($html_body)) {
         // NOTE: We just drop the entire HTML body if it won't fit. Safely
         // truncating HTML is hard, and we already have the text body to fall
         // back to.
@@ -166,7 +168,7 @@
     if (PhabricatorEnv::getEnvConfig('phabricator.silent')) {
       $mail->setMessage(
         pht(
-          'Phabricator is running in silent mode. See `%s` '.
+          'This software is running in silent mode. See `%s` '.
           'in the configuration to change this setting.',
           'phabricator.silent'));
 
@@ -226,7 +228,7 @@
     $mail = $this->getMail();
 
     $reply_raw = $mail->getReplyTo();
-    if (!strlen($reply_raw)) {
+    if (!phutil_nonempty_string($reply_raw)) {
       return null;
     }
 
@@ -241,7 +243,7 @@
 
     // If we don't have a display name, fill in a default.
     if (!strlen($reply_address->getDisplayName())) {
-      $reply_address->setDisplayName(pht('Phabricator'));
+      $reply_address->setDisplayName(PlatformSymbols::getPlatformServerName());
     }
 
     return $reply_address;
@@ -301,7 +303,11 @@
       }
     }
 
-    $subject[] = trim($mail->getSubjectPrefix());
+    $subject_prefix = $mail->getSubjectPrefix();
+    $subject_prefix = phutil_string_cast($subject_prefix);
+    $subject_prefix = trim($subject_prefix);
+
+    $subject[] = $subject_prefix;
 
     // If mail content must be encrypted, we replace the subject with
     // a generic one.
@@ -313,7 +319,7 @@
       $subject[] = $encrypt_subject;
     } else {
       $vary_prefix = $mail->getVarySubjectPrefix();
-      if (strlen($vary_prefix)) {
+      if (phutil_nonempty_string($vary_prefix)) {
         if ($this->shouldVarySubject()) {
           $subject[] = $vary_prefix;
         }
@@ -323,7 +329,7 @@
     }
 
     foreach ($subject as $key => $part) {
-      if (!strlen($part)) {
+      if (!phutil_nonempty_string($part)) {
         unset($subject[$key]);
       }
     }
@@ -403,7 +409,7 @@
     $headers = array();
 
     $thread_id = $mail->getThreadID();
-    if (!strlen($thread_id)) {
+    if (!phutil_nonempty_string($thread_id)) {
       return $headers;
     }
 
@@ -508,8 +514,8 @@
 
     $address = new PhutilEmailAddress($raw_address);
 
-    if (!strlen($address->getDisplayName())) {
-      $address->setDisplayName(pht('Phabricator'));
+    if (!phutil_nonempty_string($address->getDisplayName())) {
+      $address->setDisplayName(PlatformSymbols::getPlatformServerName());
     }
 
     return $address;
diff --git a/src/applications/metamta/management/PhabricatorMailManagementListInboundWorkflow.php b/src/applications/metamta/management/PhabricatorMailManagementListInboundWorkflow.php
--- a/src/applications/metamta/management/PhabricatorMailManagementListInboundWorkflow.php
+++ b/src/applications/metamta/management/PhabricatorMailManagementListInboundWorkflow.php
@@ -6,7 +6,7 @@
   protected function didConstruct() {
     $this
       ->setName('list-inbound')
-      ->setSynopsis(pht('List inbound messages received by Phabricator.'))
+      ->setSynopsis(pht('List inbound messages.'))
       ->setExamples(
         '**list-inbound**')
       ->setArguments(
diff --git a/src/applications/metamta/management/PhabricatorMailManagementListOutboundWorkflow.php b/src/applications/metamta/management/PhabricatorMailManagementListOutboundWorkflow.php
--- a/src/applications/metamta/management/PhabricatorMailManagementListOutboundWorkflow.php
+++ b/src/applications/metamta/management/PhabricatorMailManagementListOutboundWorkflow.php
@@ -6,7 +6,7 @@
   protected function didConstruct() {
     $this
       ->setName('list-outbound')
-      ->setSynopsis(pht('List outbound messages sent by Phabricator.'))
+      ->setSynopsis(pht('List outbound messages.'))
       ->setExamples('**list-outbound**')
       ->setArguments(
         array(
diff --git a/src/applications/metamta/parser/PhabricatorMetaMTAEmailBodyParser.php b/src/applications/metamta/parser/PhabricatorMetaMTAEmailBodyParser.php
--- a/src/applications/metamta/parser/PhabricatorMetaMTAEmailBodyParser.php
+++ b/src/applications/metamta/parser/PhabricatorMetaMTAEmailBodyParser.php
@@ -81,6 +81,7 @@
   }
 
   private function stripQuotedText($body) {
+    $body = phutil_string_cast($body);
 
     // Look for "On <date>, <user> wrote:". This may be split across multiple
     // lines. We need to be careful not to remove all of a message like this:
diff --git a/src/applications/metamta/storage/PhabricatorMetaMTAReceivedMail.php b/src/applications/metamta/storage/PhabricatorMetaMTAReceivedMail.php
--- a/src/applications/metamta/storage/PhabricatorMetaMTAReceivedMail.php
+++ b/src/applications/metamta/storage/PhabricatorMetaMTAReceivedMail.php
@@ -263,19 +263,16 @@
             MetaMTAReceivedMailStatus::STATUS_UNKNOWN_SENDER,
             pht(
               'This email was sent from an email address ("%s") that is not '.
-              'associated with a Phabricator account. To interact with '.
-              'Phabricator via email, add this address to your account.',
+              'associated with a registered user account. To interact via '.
+              'email, add this address to your account.',
               (string)$this->newFromAddress()));
         } else {
           throw new PhabricatorMetaMTAReceivedMailProcessingException(
             MetaMTAReceivedMailStatus::STATUS_NO_RECEIVERS,
             pht(
-              'Phabricator can not process this mail because no application '.
+              'This mail can not be processed because no application '.
               'knows how to handle it. Check that the address you sent it to '.
-              'is correct.'.
-              "\n\n".
-              '(No concrete, enabled subclass of PhabricatorMailReceiver can '.
-              'accept this mail.)'));
+              'is correct.'));
         }
       }
     } catch (PhabricatorMetaMTAReceivedMailProcessingException $ex) {
@@ -348,9 +345,13 @@
 
   private function getRawEmailAddresses($addresses) {
     $raw_addresses = array();
-    foreach (explode(',', $addresses) as $address) {
-      $raw_addresses[] = $this->getRawEmailAddress($address);
+
+    if (phutil_nonempty_string($addresses)) {
+      foreach (explode(',', $addresses) as $address) {
+        $raw_addresses[] = $this->getRawEmailAddress($address);
+      }
     }
+
     return array_filter($raw_addresses);
   }
 
@@ -436,7 +437,7 @@
       $status_code,
       pht(
         'Your message does not contain any body text or attachments, so '.
-        'Phabricator can not do anything useful with it. Make sure comment '.
+        'this server can not do anything useful with it. Make sure comment '.
         'text appears at the top of your message: quoted replies, inline '.
         'text, and signatures are discarded and ignored.'));
   }
@@ -484,7 +485,7 @@
     $headers = implode("\n", $headers);
 
     $body = pht(<<<EOBODY
-Your email to Phabricator was not processed, because an error occurred while
+Your email to %s was not processed, because an error occurred while
 trying to handle it:
 
 %s
@@ -499,6 +500,7 @@
 
 EOBODY
 ,
+      PlatformSymbols::getPlatformServerName(),
       wordwrap($description, 78),
       $this->getRawTextBody(),
       $headers);
@@ -563,21 +565,20 @@
     if ($sender->getIsDisabled()) {
       $failure_reason = pht(
         'Your account ("%s") is disabled, so you can not interact with '.
-        'Phabricator over email.',
+        'over email.',
         $sender->getUsername());
     } else if ($sender->getIsStandardUser()) {
       if (!$sender->getIsApproved()) {
         $failure_reason = pht(
           'Your account ("%s") has not been approved yet. You can not '.
-          'interact with Phabricator over email until your account is '.
-          'approved.',
+          'interact over email until your account is approved.',
           $sender->getUsername());
       } else if (PhabricatorUserEmail::isEmailVerificationRequired() &&
                !$sender->getIsEmailVerified()) {
         $failure_reason = pht(
           'You have not verified the email address for your account ("%s"). '.
-          'You must verify your email address before you can interact '.
-          'with Phabricator over email.',
+          'You must verify your email address before you can interact over '.
+          'email.',
           $sender->getUsername());
       }
     }
diff --git a/src/applications/metamta/storage/__tests__/PhabricatorMetaMTAMailTestCase.php b/src/applications/metamta/storage/__tests__/PhabricatorMetaMTAMailTestCase.php
--- a/src/applications/metamta/storage/__tests__/PhabricatorMetaMTAMailTestCase.php
+++ b/src/applications/metamta/storage/__tests__/PhabricatorMetaMTAMailTestCase.php
@@ -395,7 +395,7 @@
     // We expect the HTML body was dropped completely after the text body was
     // truncated.
     $this->assertTrue(
-      !strlen($html_body),
+      !phutil_nonempty_string($html_body),
       pht('HTML Body Removed'));
 
 
@@ -416,7 +416,7 @@
     $html_body = $mailer->getHTMLBody();
 
     $this->assertEqual($string_1kb, $text_body);
-    $this->assertTrue(!strlen($html_body));
+    $this->assertTrue(!phutil_nonempty_string($html_body));
   }
 
 }
diff --git a/src/applications/metamta/util/PhabricatorMailUtil.php b/src/applications/metamta/util/PhabricatorMailUtil.php
--- a/src/applications/metamta/util/PhabricatorMailUtil.php
+++ b/src/applications/metamta/util/PhabricatorMailUtil.php
@@ -21,11 +21,10 @@
     // If a mailbox prefix is configured and present, strip it off.
     $prefix_key = 'metamta.single-reply-handler-prefix';
     $prefix = PhabricatorEnv::getEnvConfig($prefix_key);
-    $len = strlen($prefix);
 
-    if ($len) {
+    if (phutil_nonempty_string($prefix)) {
       $prefix = $prefix.'+';
-      $len = $len + 1;
+      $len = strlen($prefix);
 
       if (!strncasecmp($raw_address, $prefix, $len)) {
         $raw_address = substr($raw_address, $len);
diff --git a/src/applications/settings/setting/PhabricatorEditorSetting.php b/src/applications/settings/setting/PhabricatorEditorSetting.php
--- a/src/applications/settings/setting/PhabricatorEditorSetting.php
+++ b/src/applications/settings/setting/PhabricatorEditorSetting.php
@@ -42,7 +42,7 @@
   }
 
   public function validateTransactionValue($value) {
-    if (!strlen($value)) {
+    if (!phutil_nonempty_string($value)) {
       return;
     }
 
diff --git a/src/applications/settings/setting/PhabricatorSelectSetting.php b/src/applications/settings/setting/PhabricatorSelectSetting.php
--- a/src/applications/settings/setting/PhabricatorSelectSetting.php
+++ b/src/applications/settings/setting/PhabricatorSelectSetting.php
@@ -47,6 +47,7 @@
   }
 
   final public function validateTransactionValue($value) {
+    $value = phutil_string_cast($value);
     if (!strlen($value)) {
       return;
     }
@@ -66,11 +67,13 @@
   }
 
   public function getTransactionNewValue($value) {
+    $value = phutil_string_cast($value);
+
     if (!strlen($value)) {
       return null;
     }
 
-    return (string)$value;
+    return $value;
   }
 
 }
diff --git a/src/infrastructure/storage/connection/mysql/AphrontBaseMySQLDatabaseConnection.php b/src/infrastructure/storage/connection/mysql/AphrontBaseMySQLDatabaseConnection.php
--- a/src/infrastructure/storage/connection/mysql/AphrontBaseMySQLDatabaseConnection.php
+++ b/src/infrastructure/storage/connection/mysql/AphrontBaseMySQLDatabaseConnection.php
@@ -77,6 +77,7 @@
   }
 
   public function escapeStringForLikeClause($value) {
+    $value = phutil_string_cast($value);
     $value = addcslashes($value, '\%_');
     $value = $this->escapeUTF8String($value);
     return $value;