From 66624ff92c0f04ade61fc8b4904f1ffef599e57b Mon Sep 17 00:00:00 2001
From: Austin Chen <akrolsmir@gmail.com>
Date: Tue, 8 Feb 2022 03:26:33 -0800
Subject: [PATCH] Send a welcome email to new users

---
 functions/src/create-user.ts |  3 +++
 functions/src/emails.ts      | 24 ++++++++++++++++++++++--
 functions/src/send-email.ts  |  8 +++++---
 3 files changed, 30 insertions(+), 5 deletions(-)

diff --git a/functions/src/create-user.ts b/functions/src/create-user.ts
index 2b672358..13c880f3 100644
--- a/functions/src/create-user.ts
+++ b/functions/src/create-user.ts
@@ -13,6 +13,7 @@ import {
   cleanDisplayName,
   cleanUsername,
 } from '../../common/util/clean-username'
+import { sendWelcomeEmail } from './emails'
 
 export const createUser = functions
   .runWith({ minInstances: 1 })
@@ -79,6 +80,8 @@ export const createUser = functions
 
     await firestore.collection('private-users').doc(userId).create(privateUser)
 
+    await sendWelcomeEmail(user, privateUser)
+
     return { status: 'success', user }
   })
 
diff --git a/functions/src/emails.ts b/functions/src/emails.ts
index 63d0c9d2..15f1e8b9 100644
--- a/functions/src/emails.ts
+++ b/functions/src/emails.ts
@@ -1,8 +1,8 @@
 import { getProbability } from '../../common/calculate'
 import { Contract } from '../../common/contract'
-import { User } from '../../common/user'
+import { PrivateUser, User } from '../../common/user'
 import { formatPercent } from '../../common/util/format'
-import { sendTemplateEmail } from './send-email'
+import { sendTemplateEmail, sendTextEmail } from './send-email'
 import { getPrivateUser, getUser } from './utils'
 
 type market_resolved_template = {
@@ -67,3 +67,23 @@ export const sendMarketResolutionEmail = async (
     templateData
   )
 }
+
+export const sendWelcomeEmail = async (
+  user: User,
+  privateUser: PrivateUser
+) => {
+  const firstName = user.name.split(' ')[0]
+
+  await sendTextEmail(
+    privateUser.email || '',
+    'Welcome to Manifold Markets!',
+    `Hi ${firstName},
+
+Thanks for joining us! We can't wait to see what markets you create.
+Questions? Feedback? I'd love to hear from you - just reply to this email!
+Or come chat with us on Discord: https://discord.gg/eHQBNBqXuh
+
+Best,
+Austin from Manifold`
+  )
+}
diff --git a/functions/src/send-email.ts b/functions/src/send-email.ts
index 1afc1526..938e3fc5 100644
--- a/functions/src/send-email.ts
+++ b/functions/src/send-email.ts
@@ -5,11 +5,13 @@ const DOMAIN = 'mg.manifold.markets'
 const mg = mailgun({ apiKey: functions.config().mailgun.key, domain: DOMAIN })
 
 export const sendTextEmail = (to: string, subject: string, text: string) => {
-  const data = {
-    from: 'Manifold Markets <no-reply@manifold.markets>',
+  const data: mailgun.messages.SendData = {
+    from: 'Manifold Markets <info@manifold.markets>',
     to,
     subject,
     text,
+    // Don't rewrite urls in plaintext emails
+    'o:tracking-clicks': 'htmlonly',
   }
 
   return mg.messages().send(data, (error) => {
@@ -25,7 +27,7 @@ export const sendTemplateEmail = (
   templateData: Record<string, string>
 ) => {
   const data = {
-    from: 'Manifold Markets <no-reply@manifold.markets>',
+    from: 'Manifold Markets <info@manifold.markets>',
     to,
     subject,
     template: templateId,