diff --git a/packages/package-stats-opt-out/.gitignore b/packages/package-stats-opt-out/.gitignore
new file mode 100644
index 0000000000..677a6fc263
--- /dev/null
+++ b/packages/package-stats-opt-out/.gitignore
@@ -0,0 +1 @@
+.build*
diff --git a/packages/package-stats-opt-out/package.js b/packages/package-stats-opt-out/package.js
new file mode 100644
index 0000000000..02116f94f7
--- /dev/null
+++ b/packages/package-stats-opt-out/package.js
@@ -0,0 +1,9 @@
+Package.describe({
+  summary: "Opt out of sending package stats",
+  version: '1.0.0'
+});
+
+Package.on_use(function (api) {
+  // Empty. This package's presence tells the meteor tool to stop
+  // sending package stats.
+});
diff --git a/tools/stats.js b/tools/stats.js
index 1a27fc9037..bf3b658168 100644
--- a/tools/stats.js
+++ b/tools/stats.js
@@ -7,6 +7,10 @@ var project = require("./project.js");
 var auth = require("./auth.js");
 var ServiceConnection = require("./service-connection.js");
 
+// The name of the package that you add to your app to opt out of
+// sending stats.
+var optOutPackageName = "package-stats-opt-out";
+
 // Return a list of packages used by this app, both directly and
 // indirectly. Formatted as a list of objects with 'name', 'version'
 // and 'direct', which is how the `recordAppPackages` method on the
@@ -27,6 +31,13 @@ var packageList = function (appDir) {
 };
 
 var recordPackages = function (appDir) {
+  // Before doing anything, look at the app's dependencies to see if the
+  // opt-out package is there; if present, we don't record any stats.
+  var packages = packageList(appDir);
+  if (_.contains(_.pluck(packages, "name"), optOutPackageName)) {
+    return;
+  }
+
   // We do this inside a new fiber to avoid blocking anything on talking
   // to the package stats server. If we can't connect, for example, we
   // don't care; we'll just miss out on recording these packages.
@@ -50,7 +61,7 @@ var recordPackages = function (appDir) {
 
       conn.call("recordAppPackages",
                 project.getAppIdentifier(appDir),
-                packageList(appDir));
+                packages);
     } catch (err) {
       // Do nothing. A failure to record package stats shouldn't be
       // visible to the end user and shouldn't affect whatever command
diff --git a/tools/tests/report-stats.js b/tools/tests/report-stats.js
index a6b5c79677..2f93f5246a 100644
--- a/tools/tests/report-stats.js
+++ b/tools/tests/report-stats.js
@@ -9,7 +9,7 @@ process.env.METEOR_PACKAGE_STATS_SERVER_URL = testStatsServer;
 // NOTE: This test will fail if your machine's time is skewed by more
 // than 30 minutes. This is because the `fetchAppPackageUsage` method
 // works by passing an hour time range.
-selftest.define("report-stats", function () {
+selftest.define("report-stats", ["slow"], function () {
   var s = new Sandbox;
 
   var run = s.run("create", "foo");
@@ -46,8 +46,23 @@ selftest.define("report-stats", function () {
   appPackages = stats.getPackagesForAppIdInTest(s.cwd);
   selftest.expectEqual(appPackages.userId, testUtils.getUserId(s));
 
-  // TODO:
-  // - opt out
+  // Add the opt-out package, verify that no stats are recorded for the
+  // app.
+  run = s.run("add", "package-stats-opt-out");
+  run.waitSecs(15);
+  run.expectExit(0);
+  bundleWithFreshIdentifier(s);
+  appPackages = stats.getPackagesForAppIdInTest(s.cwd);
+  selftest.expectEqual(appPackages, undefined);
+
+  // Remove the opt-out package, verify that stats get sent again.
+  run = s.run("remove", "package-stats-opt-out");
+  run.waitSecs(15);
+  run.expectExit(0);
+  bundle(s);
+  appPackages = stats.getPackagesForAppIdInTest(s.cwd);
+  selftest.expectEqual(appPackages.userId, testUtils.getUserId(s));
+  selftest.expectEqual(appPackages.packages, stats.packageList(s.cwd));
 });
 
 // Bundle the app in the current working directory after deleting its
@@ -55,6 +70,12 @@ selftest.define("report-stats", function () {
 // @param s {Sandbox}
 var bundleWithFreshIdentifier = function (s) {
   s.unlink(".meteor/identifier");
+  bundle(s);
+};
+
+// Bundle the app in the current working directory.
+// @param s {Sandbox}
+var bundle = function (s) {
   var run = s.run("bundle", "foo.tar.gz");
   run.waitSecs(30);
   run.expectExit(0);