diff --git a/firebaseFunctions/firestore.js b/firebaseFunctions/firestore.js
index 5cb2a33..082c3ee 100644
--- a/firebaseFunctions/firestore.js
+++ b/firebaseFunctions/firestore.js
@@ -10,9 +10,18 @@ import slack from "./services/slack.service";
 
 admin.initializeApp(functions.config().firebase);
 
-async function subscribeToMailchimp({ name, email, rating }) {
+async function subscribeToMailchimp({
+    name,
+    email,
+    rating,
+    subscribedToMailingList
+}) {
     const lists = [mailchimp.mailingLists.javascriptQuizRespondants];
 
+    if (subscribedToMailingList) {
+        lists.push(mailchimp.mailingLists.danWiltCoachingUpdates);
+    }
+
     if (rating === ratings.EXPERT) {
         lists.push(mailchimp.mailingLists.mobileDevReady);
     } else if (rating === ratings.PROFICIENT) {
@@ -24,23 +33,23 @@ async function subscribeToMailchimp({ name, email, rating }) {
     await mailchimp.addUserToLists(name, email, lists);
 }
 
-async function sendSlackMessage({ name, email }) {
-    await slack.sendMessage(`New quiz submission from ${name}: ${email}`);
+async function sendSlackMessage({ name, email, subscribedToMailingList }) {
+    const subscribedSentence = subscribedToMailingList
+        ? "They subscribed for periodic mailing updates! 🙌"
+        : `They didn't subscribe for periodic mailing updates. 😞`;
+
+    await slack.sendMessage(
+        `${name} (${email}) just took the quiz! ${subscribedSentence}`
+    );
 }
 
 export async function submitQuiz(result) {
-    const { subscribedToMailingList, ...rest } = result;
-    
-    const actions = [
+    await Promise.all([
         admin
             .firestore()
             .collection(`results`)
-            .add(rest)
-    ];
-
-    if (subscribedToMailingList) {
-        actions.push(subscribeToMailchimp(rest), sendSlackMessage(rest));
-    }
-
-    await Promise.all(actions);
+            .add(result),
+        subscribeToMailchimp(result),
+        sendSlackMessage(result)
+    ]);
 }
diff --git a/firebaseFunctions/services/slack.service.js b/firebaseFunctions/services/slack.service.js
index 405f76b..a4709bf 100644
--- a/firebaseFunctions/services/slack.service.js
+++ b/firebaseFunctions/services/slack.service.js
@@ -3,9 +3,14 @@ import axios from "axios";
 import { SLACK_URL } from "../keys";
 
 async function sendMessage(text) {
-    return axios.post(SLACK_URL, {
-        text
-    });
+    try {
+        await axios.post(SLACK_URL, {
+            text
+        });
+    } catch (e) {
+        console.log("failed to send slack message");
+        console.log("error: ", e);
+    }
 }
 
 export default {