Switch postmark api to smtp

package.json

@@ -20,8 +20,8 @@
     "@types/express-ws": "^3.0.5",
     "@types/mjml": "^4.7.4",
     "@types/mustache": "^4.2.6",
+    "@types/nodemailer": "^8.0.1",
     "@types/sanitize-html": "^2.16.0",
-    
     "@types/ws": "^8.18.1",
     "@typescript-eslint/eslint-plugin": "^8.43.0",
     "@typescript-eslint/parser": "^8.43.0",
@@ -48,17 +48,15 @@
     "express": "^4.21.2",
     "express-rate-limit": "^7.5.1",
     "express-ws": "^5.0.2",
-    
     "localstorage-polyfill": "^1.0.1",
     "mjml": "^4.15.3",
     "mustache": "^4.2.0",
+    "nodemailer": "^6.10.1",
     "nostr-tools": "^2.16.2",
-    "postmark": "^4.0.5",
     "sanitize-html": "^2.17.0",
     "sqlite3": "^5.1.7",
     "succinct-async": "^1.0.4",
     "ts-node-dev": "^2.0.0",
-    
     "ws": "^8.18.3"
   },
   "pnpm": {

src/env.ts

@@ -8,8 +8,11 @@ import { routerContext } from '@welshman/router'
 if (!process.env.MAILSHIP_URL) throw new Error('MAILSHIP_URL is not defined.')
 if (!process.env.MAILSHIP_NAME) throw new Error('MAILSHIP_NAME is not defined.')
 if (!process.env.MAILSHIP_SECRET) throw new Error('MAILSHIP_SECRET is not defined.')
-if (!process.env.POSTMARK_API_KEY) throw new Error('POSTMARK_API_KEY is not defined.')
-if (!process.env.POSTMARK_SENDER_ADDRESS) throw new Error('POSTMARK_SENDER_ADDRESS is not defined.')
+if (!process.env.SMTP_HOST) throw new Error('SMTP_HOST is not defined.')
+if (!process.env.SMTP_PORT) throw new Error('SMTP_PORT is not defined.')
+if (!process.env.SMTP_USER) throw new Error('SMTP_USER is not defined.')
+if (!process.env.SMTP_PASSWORD) throw new Error('SMTP_PASSWORD is not defined.')
+if (!process.env.SMTP_FROM) throw new Error('SMTP_FROM is not defined.')
 if (!process.env.DEFAULT_RELAYS) throw new Error('DEFAULT_RELAYS is not defined.')
 if (!process.env.INDEXER_RELAYS) throw new Error('INDEXER_RELAYS is not defined.')
 if (!process.env.SEARCH_RELAYS) throw new Error('SEARCH_RELAYS is not defined.')
@@ -20,12 +23,15 @@ export const MAILSHIP_URL = process.env.MAILSHIP_URL
 export const MAILSHIP_NAME = process.env.MAILSHIP_NAME
 export const BASE_URL = process.env.BASE_URL
 export const appSigner = Nip01Signer.fromSecret(process.env.MAILSHIP_SECRET)
-export const POSTMARK_API_KEY = process.env.POSTMARK_API_KEY
-export const POSTMARK_SENDER_ADDRESS = process.env.POSTMARK_SENDER_ADDRESS
 export const DEFAULT_RELAYS = process.env.DEFAULT_RELAYS.split(',').map(normalizeRelayUrl)
 export const INDEXER_RELAYS = process.env.INDEXER_RELAYS.split(',').map(normalizeRelayUrl)
 export const SEARCH_RELAYS = process.env.SEARCH_RELAYS.split(',').map(normalizeRelayUrl)
 export const PORT = process.env.PORT
+export const SMTP_HOST = process.env.SMTP_HOST
+export const SMTP_PORT = process.env.SMTP_PORT
+export const SMTP_USER = process.env.SMTP_USER
+export const SMTP_PASSWORD = process.env.SMTP_PASSWORD
+export const SMTP_FROM = process.env.SMTP_FROM
 
 appSigner.getPubkey().then(pubkey => {
   console.log(`Running as ${pubkey}`)

src/mailer.ts

@@ -1,32 +1,40 @@
-import { ServerClient } from 'postmark'
-import { POSTMARK_SENDER_ADDRESS, POSTMARK_API_KEY, MAILSHIP_NAME, BASE_URL } from './env.js'
+import nodemailer from 'nodemailer'
+import { SMTP_HOST, SMTP_PORT, SMTP_USER, SMTP_PASSWORD, SMTP_FROM, MAILSHIP_NAME, BASE_URL } from './env.js'
 import type { Subscription } from './alert.js'
 import { render } from './templates.js'
 
-const client = new ServerClient(POSTMARK_API_KEY)
+const transporter = nodemailer.createTransport({
+  host: SMTP_HOST,
+  port: Number(SMTP_PORT),
+  secure: true,
+  auth: {
+    user: SMTP_USER,
+    pass: SMTP_PASSWORD,
+  },
+})
 
 export const sendConfirm = (sub: Subscription) => {
   const href = `${BASE_URL}/confirm?token=${sub.key}`
 
-  return client.sendEmail({
-    From: POSTMARK_SENDER_ADDRESS,
-    To: sub.email,
-    Subject: 'Confirm your email digest',
-    HtmlBody: `
+  return transporter.sendMail({
+    from: SMTP_FROM,
+    to: sub.email,
+    subject: 'Confirm your email digest',
+    html: `
       <h3>Welcome to ${MAILSHIP_NAME}!</h3>
       <p>Please confirm that you would like to receive ${sub.frequency} digests by clicking the link below:</p>
       <p><a href="${href}">Confirm Digest</a></p>
     `,
-    TextBody: `Please confirm that you would like to receive ${sub.frequency} digests by visiting: ${href}`,
+    text: `Please confirm that you would like to receive ${sub.frequency} digests by visiting: ${href}`,
   })
 }
 
 export const sendDigest = async (sub: Subscription, variables: Record<string, any>) => {
-  return client.sendEmail({
-    From: POSTMARK_SENDER_ADDRESS,
-    To: sub.email,
-    Subject: 'New activity',
-    HtmlBody: await render('emails/digest.mjml', {
+  return transporter.sendMail({
+    from: SMTP_FROM,
+    to: sub.email,
+    subject: 'New activity',
+    html: await render('emails/digest.mjml', {
       ...variables,
       name: sub.email.split('@')[0],
       unsubscribeUrl: `${BASE_URL}/unsubscribe?token=${sub.key}`,