diff --git a/README.md b/README.md
index 75858132..40af8452 100644
--- a/README.md
+++ b/README.md
@@ -258,13 +258,29 @@ while(admins.hasNext()) {
 ### Events
 
 ```java
-Event event = new Event().setEventName("bought-hat")
+// Create an event with a user ID
+// This is only valid for users
+Event event = new Event()
+    .setEventName("bought-hat")
     .setUserID("1")
     .putMetadata("invitee_email", "jayne@serenity.io")
     .putMetadata("found_date", System.currentTimeMillis())
     .putMetadata("new_signup", true);
 Event.create(event);
 
+// Create an event with an email
+// This is only valid for users
+Event event = new Event()
+    .setEventName("bought-hat")
+    .setEmail("test@example.com");
+Event.create(event);
+
+// Create an event with an ID
+// This is valid for both users and leads
+Event event = new Event()
+        .setEventName("bought-hat")
+        .setId("599d6aeeda850883ed8ba7c2");
+Event.create(event);
 ```
 
 
diff --git a/intercom-java/src/main/java/io/intercom/api/Event.java b/intercom-java/src/main/java/io/intercom/api/Event.java
index 41c6e250..fb9864e5 100644
--- a/intercom-java/src/main/java/io/intercom/api/Event.java
+++ b/intercom-java/src/main/java/io/intercom/api/Event.java
@@ -76,6 +76,7 @@ static void validateCreateEvent(Event event) {
         }
 
         if (Strings.isNullOrEmpty(event.getUserID())
+            && Strings.isNullOrEmpty(event.getId())
             && Strings.isNullOrEmpty(event.getEmail())) {
             throw new InvalidException(INVALID_USER);
         }
@@ -94,6 +95,9 @@ static void validateCreateEvent(Event event) {
     @JsonProperty("email")
     private String email;
 
+    @JsonProperty("id")
+    private String id;
+
     @JsonProperty("user_id")
     private String userID;
 
@@ -135,6 +139,15 @@ public Event setEmail(String email) {
         return this;
     }
 
+    public String getId() {
+        return id;
+    }
+
+    public Event setId(String id) {
+        this.id = id;
+        return this;
+    }
+
     public String getUserID() {
         return userID;
     }
@@ -197,6 +210,7 @@ public boolean equals(Object o) {
         if (!type.equals(event.type)) return false;
         //noinspection RedundantIfStatement
         if (userID != null ? !userID.equals(event.userID) : event.userID != null) return false;
+        if (id != null ? !id.equals(event.id) : event.id != null) return false;
 
         return true;
     }
@@ -208,6 +222,7 @@ public int hashCode() {
         result = 31 * result + (int) (createdAt ^ (createdAt >>> 32));
         result = 31 * result + (email != null ? email.hashCode() : 0);
         result = 31 * result + (userID != null ? userID.hashCode() : 0);
+        result = 31 * result + (id != null ? id.hashCode() : 0);
         result = 31 * result + (metadata != null ? metadata.hashCode() : 0);
         return result;
     }
@@ -219,6 +234,7 @@ public String toString() {
             ", eventName='" + eventName + '\'' +
             ", createdAt=" + createdAt +
             ", email='" + email + '\'' +
+            ", id='" + id + '\'' +
             ", userID='" + userID + '\'' +
             ", metadata=" + metadata +
             "} " + super.toString();
diff --git a/intercom-java/src/test/java/io/intercom/api/EventTest.java b/intercom-java/src/test/java/io/intercom/api/EventTest.java
index 8eeee366..8695ab2b 100644
--- a/intercom-java/src/test/java/io/intercom/api/EventTest.java
+++ b/intercom-java/src/test/java/io/intercom/api/EventTest.java
@@ -97,6 +97,39 @@ public void testMissingEventName() {
         }
     }
 
+    @Test
+    public void testMissingId() {
+        final Event event1 = new Event().setEventName("test-id");
+        try {
+            Event.create(event1);
+            fail("an event with no id or email should be invalid");
+        } catch (InvalidException e) {
+            assertTrue(e.getFirstError() != null);
+        }
+
+        final Event event2 = new Event()
+                .setEventName("test-id")
+                .setId("")
+                .putMetadata("invitee_email", "jayne@serenity.io");
+        try {
+            Event.create(event2);
+            fail("an event with an empty id should be invalid");
+        } catch (InvalidException e) {
+            assertTrue(e.getFirstError() != null);
+        }
+
+        final Event event3 = new Event()
+                .setId("49bf6b081d661db4408a51e1")
+                .setEmail("");
+        try {
+            Event.create(event3);
+            fail("an event with an empty email should be invalid");
+        } catch (InvalidException e) {
+            assertTrue(e.getFirstError() != null);
+        }
+
+    }
+
     @Test
     public void testValid() {
         Event event1 = new Event()
@@ -126,7 +159,25 @@ public void testValid() {
         } catch (InvalidException e) {
             fail("an event with a user id, email and a name should be valid");
         }
-    }
 
+        Event event4 = new Event()
+                .setId("49bf6b081d661db4408a51e1")
+                .setEventName("test-id");
+        try {
+            Event.validateCreateEvent(event4);
+        } catch (InvalidException e) {
+            fail("an event with an id and a name should be valid");
+        }
 
+        Event event5 = new Event()
+                .setId("49bf6b081d661db4408a51e1")
+                .setEmail("jayne@serenity.io")
+                .setEventName("test-id");
+        try {
+            Event.validateCreateEvent(event5);
+        } catch (InvalidException e) {
+            fail("an event with an id, email and a name should be valid");
+        }
+
+    }
 }
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