diff --git a/src/future/postmark/PhutilPostmarkFuture.php b/src/future/postmark/PhutilPostmarkFuture.php
index 090d8b3..23c21f4 100644
--- a/src/future/postmark/PhutilPostmarkFuture.php
+++ b/src/future/postmark/PhutilPostmarkFuture.php
@@ -1,85 +1,100 @@
 <?php
 
 final class PhutilPostmarkFuture extends FutureProxy {
 
   private $future;
   private $accessToken;
   private $method;
   private $parameters;
+  private $timeout;
 
   public function __construct() {
     parent::__construct(null);
   }
 
   public function setAccessToken($token) {
     $this->accessToken = $token;
     return $this;
   }
 
   public function setClientID($client_id) {
     $this->clientID = $client_id;
     return $this;
   }
 
   public function setMethod($method, array $parameters) {
     $this->method = $method;
     $this->parameters = $parameters;
     return $this;
   }
 
+  public function setTimeout($timeout) {
+    $this->timeout = $timeout;
+    return $this;
+  }
+
+  public function getTimeout() {
+    return $this->timeout;
+  }
+
   protected function getProxiedFuture() {
     if (!$this->future) {
       if ($this->accessToken === null) {
         throw new PhutilInvalidStateException('setAccessToken');
       }
 
       if ($this->method === null || $this->parameters === null) {
         throw new PhutilInvalidStateException('setMethod');
       }
 
       $uri = id(new PhutilURI('https://api.postmarkapp.com/'))
         ->setPath('/'.$this->method);
 
       $request_body = phutil_json_encode($this->parameters);
 
       $future = id(new HTTPSFuture($uri))
         ->setData($request_body)
         ->setMethod('POST')
         ->addHeader('X-Postmark-Server-Token', $this->accessToken)
         ->addHeader('Accept', 'application/json')
         ->addHeader('Content-Type', 'application/json');
 
+      $timeout = $this->getTimeout();
+      if ($timeout) {
+        $future->setTimeout($timeout);
+      }
+
       $this->future = $future;
     }
 
     return $this->future;
   }
 
   protected function didReceiveResult($result) {
     list($status, $body, $headers) = $result;
 
     if ($status->isError()) {
       throw $status;
     }
 
     try {
       $data = phutil_json_decode($body);
     } catch (PhutilJSONParserException $ex) {
       throw new PhutilProxyException(
         pht('Expected JSON response from Postmark.'),
         $ex);
     }
 
     if (idx($data, 'ErrorCode')) {
       $error = $data['ErrorCode'];
       throw new Exception(
         pht(
           'Received error from Postmark: (%s) %s',
           $error,
           idx($data, 'Message')));
     }
 
     return $data;
   }
 
 }