diff --git a/JQL/Event by cohort.jql.js b/JQL/Event by cohort.jql.js
new file mode 100644
index 0000000..dacce5f
--- /dev/null
+++ b/JQL/Event by cohort.jql.js	
@@ -0,0 +1,46 @@
+function main() {
+    var activeUUIDs = [
+        "000-000-000-000",
+    ];
+    var activeEmails = [
+        "tim@kidfund.us",
+    ];
+    
+    var queryEventNames = [
+        "Invite Sent",
+        "Tell Friend Sent",
+        // "Invite Opened",
+        // "Tell Friend Opened",
+    ];
+
+    return join(
+        Events({
+            from_date: "2017-01-01",
+            to_date: "2018-09-20"
+        }),
+        People())
+        .filter(function (tuple) {
+            return tuple.event
+                && tuple.event.name
+                && tuple.user
+                &&
+                (
+                    (tuple.user.properties.uuid
+                        && activeUUIDs.includes(tuple.user.properties.uuid)
+                    )
+                    ||
+                    (tuple.user.properties.email
+                        && activeEmails.includes(tuple.user.properties.email)
+                    )
+                );
+        })
+        .groupByUser(function (state, tuples) {
+            var firstQueryEvent = tuples.find(function (tuple) {
+                var eventName = tuple.event.name;
+                return eventName &&
+                    queryEventNames.includes(eventName);
+            });
+            return firstQueryEvent !== undefined;
+        })
+        .groupBy(["value"], mixpanel.reducer.count());
+}