From c58ed8bd2c7d67c4b9c26ad51f9b231a0523c0be Mon Sep 17 00:00:00 2001
From: mantikoros <sgrugett@gmail.com>
Date: Tue, 16 Aug 2022 11:43:51 -0500
Subject: [PATCH] personal followup email

---
 functions/src/create-user.ts |  3 ++-
 functions/src/emails.ts      | 41 +++++++++++++++++++++++++++++++++++-
 functions/src/send-email.ts  |  6 ++++--
 3 files changed, 46 insertions(+), 4 deletions(-)

diff --git a/functions/src/create-user.ts b/functions/src/create-user.ts
index bd65b14a..c0b03e23 100644
--- a/functions/src/create-user.ts
+++ b/functions/src/create-user.ts
@@ -16,7 +16,7 @@ import {
   cleanDisplayName,
   cleanUsername,
 } from '../../common/util/clean-username'
-import { sendWelcomeEmail } from './emails'
+import { sendPersonalFollowupEmail, sendWelcomeEmail } from './emails'
 import { isWhitelisted } from '../../common/envs/constants'
 import {
   CATEGORIES_GROUP_SLUG_POSTFIX,
@@ -96,6 +96,7 @@ export const createuser = newEndpoint(opts, async (req, auth) => {
 
   await addUserToDefaultGroups(user)
   await sendWelcomeEmail(user, privateUser)
+  await sendPersonalFollowupEmail(user, privateUser)
   await track(auth.uid, 'create user', { username }, { ip: req.ip })
 
   return { user, privateUser }
diff --git a/functions/src/emails.ts b/functions/src/emails.ts
index 19c7d4e4..710ecab1 100644
--- a/functions/src/emails.ts
+++ b/functions/src/emails.ts
@@ -1,3 +1,5 @@
+import * as dayjs from 'dayjs'
+
 import { DOMAIN } from '../../common/envs/constants'
 import { Answer } from '../../common/answer'
 import { Bet } from '../../common/bet'
@@ -14,7 +16,7 @@ import {
 import { getValueFromBucket } from '../../common/calculate-dpm'
 import { formatNumericProbability } from '../../common/pseudo-numeric'
 
-import { sendTemplateEmail } from './send-email'
+import { sendTemplateEmail, sendTextEmail } from './send-email'
 import { getPrivateUser, getUser } from './utils'
 import { getFunctionUrl } from '../../common/api'
 import { richTextToString } from '../../common/util/parse'
@@ -165,6 +167,43 @@ export const sendWelcomeEmail = async (
   )
 }
 
+export const sendPersonalFollowupEmail = async (
+  user: User,
+  privateUser: PrivateUser
+) => {
+  if (!privateUser || !privateUser.email) return
+
+  const { name } = user
+  const firstName = name.split(' ')[0]
+
+  const emailBody = `Hi ${firstName},
+
+Thanks for signing up! I'm one of the cofounders of Manifold Markets, and was wondering how you've found your exprience on the platform so far?
+
+If you haven't already, I encourage you to try creating your own prediction market (https://manifold.markets/create) and joining our Discord chat (https://discord.com/invite/eHQBNBqXuh).
+
+Feel free to reply to this email with any questions or concerns you have.
+
+Cheers,
+
+James
+Cofounder of Manifold Markets
+https://manifold.markets
+ `
+
+  const sendTime = dayjs().add(4, 'hours').toString()
+
+  await sendTextEmail(
+    privateUser.email,
+    'How are you finding Manifold?',
+    emailBody,
+    {
+      from: 'James from Manifold <james@manifold.markets>',
+      'o:deliverytime': sendTime,
+    }
+  )
+}
+
 export const sendOneWeekBonusEmail = async (
   user: User,
   privateUser: PrivateUser
diff --git a/functions/src/send-email.ts b/functions/src/send-email.ts
index 7a643418..cb054aa7 100644
--- a/functions/src/send-email.ts
+++ b/functions/src/send-email.ts
@@ -9,10 +9,12 @@ const initMailgun = () => {
 export const sendTextEmail = async (
   to: string,
   subject: string,
-  text: string
+  text: string,
+  options?: Partial<mailgun.messages.SendData>
 ) => {
   const data: mailgun.messages.SendData = {
-    from: 'Manifold Markets <info@manifold.markets>',
+    ...options,
+    from: options?.from ?? 'Manifold Markets <info@manifold.markets>',
     to,
     subject,
     text,