diff --git a/src/main/java/org/opentripplanner/middleware/utils/NotificationUtils.java b/src/main/java/org/opentripplanner/middleware/utils/NotificationUtils.java
index d914e7656..4e9e8cbcb 100644
--- a/src/main/java/org/opentripplanner/middleware/utils/NotificationUtils.java
+++ b/src/main/java/org/opentripplanner/middleware/utils/NotificationUtils.java
@@ -20,8 +20,10 @@
 
 import java.io.IOException;
 import java.net.URI;
+import java.net.URLEncoder;
 import java.util.Map;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.opentripplanner.middleware.utils.ConfigUtils.getConfigPropertyAsText;
 
 /**
@@ -327,7 +329,11 @@ public static int getPushInfo(String toUser) {
         try {
             Map<String, String> headers = Map.of("Accept", "application/json");
             var httpResponse = HttpUtils.httpRequestRawResponse(
-                URI.create(PUSH_API_URL + "/devices/get?api_key=" + PUSH_API_KEY + "&user=" + toUser),
+                URI.create(getPushDevicesUrl(String.format(
+                    "%s/devices/get?api_key=%s&user=",
+                    PUSH_API_URL,
+                    PUSH_API_KEY
+                ), toUser)),
                 1000,
                 HttpMethod.GET,
                 headers,
@@ -346,6 +352,10 @@ public static int getPushInfo(String toUser) {
         return 0;
     }
 
+    static String getPushDevicesUrl(String baseUrl, String toUser) {
+        return baseUrl + URLEncoder.encode(toUser, UTF_8);
+    }
+
     /**
      * Poll the push middleware for the number of devices registered to receive push notifications
      * for the specified user, and update the corresponding field in memory and Mongo.
diff --git a/src/test/java/org/opentripplanner/middleware/utils/NotificationUtilsTest.java b/src/test/java/org/opentripplanner/middleware/utils/NotificationUtilsTest.java
index 495f1e1bf..983fb438c 100644
--- a/src/test/java/org/opentripplanner/middleware/utils/NotificationUtilsTest.java
+++ b/src/test/java/org/opentripplanner/middleware/utils/NotificationUtilsTest.java
@@ -6,6 +6,7 @@
 import org.junit.jupiter.params.provider.NullSource;
 import org.junit.jupiter.params.provider.ValueSource;
 
+import static org.opentripplanner.middleware.utils.NotificationUtils.getPushDevicesUrl;
 import static org.opentripplanner.middleware.utils.NotificationUtils.getTwilioLocale;
 
 /**
@@ -30,4 +31,14 @@ void canGetTwilioLocale() {
     void twilioLocaleDefaultsToEnglish(String locale) {
         Assertions.assertEquals("en", getTwilioLocale(locale));
     }
+
+    @Test
+    void testGetPushDevicesUrl() {
+        String email = "first.last+suffix@example.com";
+        String base = "https://get.example.com/devices/?user=";
+        Assertions.assertEquals(
+            "https://get.example.com/devices/?user=first.last%2Bsuffix%40example.com",
+            getPushDevicesUrl(base, email)
+        );
+    }
 }