added SMTP support and removed resend dependency

.env.example

@@ -14,12 +14,14 @@ NODE_ENV=development
 # AUTH_GITHUB_CLIENT_ID=
 # AUTH_GITHUB_CLIENT_SECRET=
 
-# Resend is an email service used for signing in to Trigger.dev via a Magic Link.
+# EMAIL VARIABLES.
 # Emails will print to the console if you leave these commented out
-### Visit https://resend.com, create an account and get your API key. Then insert it below along with your From and Reply To email addresses. Visit https://resend.com/docs for more information.
-# RESEND_API_KEY=<api_key>
 # FROM_EMAIL=
 # REPLY_TO_EMAIL=
+# SMTP_HOST= 
+# SMTP_PORT= 
+# SMTP_USER=  
+# SMTP_PASSWORD=  
 
 # CLOUD VARIABLES
 POSTHOG_PROJECT_KEY=

apps/webapp/app/env.server.ts

@@ -27,7 +27,10 @@ const EnvironmentSchema = z.object({
   AUTH_GITHUB_CLIENT_SECRET: z.string().optional(),
   FROM_EMAIL: z.string().optional(),
   REPLY_TO_EMAIL: z.string().optional(),
-  RESEND_API_KEY: z.string().optional(),
+  SMTP_HOST: z.string().optional(), 
+  SMTP_PORT: z.coerce.number().optional(), 
+  SMTP_USER: z.string().optional(), 
+  SMTP_PASSWORD: z.string().optional(), 
   PLAIN_API_KEY: z.string().optional(),
   RUNTIME_PLATFORM: z.enum(["docker-compose", "ecs", "local"]).default("local"),
 });

apps/webapp/app/services/email.server.ts

@@ -8,7 +8,15 @@ import type { AuthUser } from "./authUser";
 import { workerQueue } from "./worker.server";
 
 const client = new EmailClient({
-  apikey: env.RESEND_API_KEY,
+  smtpConfig: {
+    host: env.SMTP_HOST,
+    secure: true,
+    port: env.SMTP_PORT,
+    auth: {
+      user: env.SMTP_USER,
+      pass: env.SMTP_PASSWORD,
+    },
+  },
   imagesBaseUrl: env.APP_ORIGIN,
   from: env.FROM_EMAIL ?? "team@email.trigger.dev",
   replyTo: env.REPLY_TO_EMAIL ?? "help@email.trigger.dev",

docs/documentation/guides/self-hosting/flyio.mdx

@@ -82,9 +82,9 @@ Both of these secrets should be set to the base URL of your fly application. For
 
 ![github copy secrets](/images/github-secrets.png)
 
-`RESEND_API_KEY`, `FROM_EMAIL` and `REPLY_TO_EMAIL`
+`FROM_EMAIL`,`REPLY_TO_EMAIL`, `SMTP_HOST`, `SMTP_PORT`, `SMTP_USER` and `SMTP_PASSWORD`
 
-We use [Resend.com](https://resend.com) for email sending (including the magic-link signup/login system). They have a generous free tier of 100 emails a day that should be sufficient. Signup for Resend.com and enter the environment vars below
+We use SMTP for email sending (including the magic-link signup/login system).
 
 ## Set the secrets
 
@@ -99,7 +99,10 @@ fly secrets set \
   APP_ORIGIN="https://<fly app name>.fly.dev" \
   FROM_EMAIL="Acme Inc. <hello@yourdomain.com>" \
   REPLY_TO_EMAIL="Acme Inc. <reply@yourdomain.com>" \
-  RESEND_API_KEY=<your API Key> \
+  SMTP_HOST= < your SMTP host > \
+  SMTP_PORT= < your SMTP port > \
+  SMTP_USER=  < your SMTP user > \
+  SMTP_PASSWORD= < your SMTP password > \
   AUTH_GITHUB_CLIENT_ID=<your GitHub OAuth Client ID> \
   AUTH_GITHUB_CLIENT_SECRET=<your GitHUb OAuth Client Secret>
 

packages/emails/package.json

@@ -21,16 +21,17 @@
     "@react-email/render": "^0.0.7",
     "@react-email/section": "^0.0.1",
     "@react-email/text": "^0.0.2",
+    "nodemailer": "^6.9.4",
     "react": "^18.2.0",
     "react-email": "^1.6.1",
-    "resend": "^0.9.1",
     "tiny-invariant": "^1.2.0",
     "zod": "3.21.4"
   },
   "devDependencies": {
-    "@types/react": "18.2.17",
     "@trigger.dev/tsconfig": "workspace:*",
     "@types/node": "16",
+    "@types/nodemailer": "^6.4.9",
+    "@types/react": "18.2.17",
     "typescript": "^4.9.4"
   },
   "engines": {

packages/emails/src/index.tsx

@@ -8,7 +8,7 @@ import WorkflowIntegration from "../emails/workflow-integration";
 import InviteEmail, { InviteEmailSchema } from "../emails/invite";
 import { render } from "@react-email/render";
 
-import { Resend } from "resend";
+import nodemailer from "nodemailer";
 import { z } from "zod";
 import React from "react";
 
@@ -42,15 +42,31 @@ export const DeliverEmailSchema = z
 
 export type DeliverEmail = z.infer<typeof DeliverEmailSchema>;
 
+export type NodeMailerTransportOptions = {
+  host?: string;
+  port?: number;
+  secure?: boolean;
+  auth?: {
+    user?: string;
+    pass?: string;
+  };
+};
+
 export class EmailClient {
-  #client?: Resend;
+  #client?: nodemailer.Transporter;
   #imagesBaseUrl: string;
   #from: string;
   #replyTo: string;
 
-  constructor(config: { apikey?: string; imagesBaseUrl: string; from: string; replyTo: string }) {
-    this.#client =
-      config.apikey && config.apikey.startsWith("re_") ? new Resend(config.apikey) : undefined;
+  constructor(config: {
+    smtpConfig?: NodeMailerTransportOptions;
+    imagesBaseUrl: string;
+    from: string;
+    replyTo: string;
+  }) {
+    this.#client = config.smtpConfig?.host
+      ? nodemailer.createTransport(config.smtpConfig)
+      : undefined;
     this.#imagesBaseUrl = config.imagesBaseUrl;
     this.#from = config.from;
     this.#replyTo = config.replyTo;
@@ -110,12 +126,12 @@ export class EmailClient {
 
   async #sendEmail({ to, subject, react }: { to: string; subject: string; react: ReactElement }) {
     if (this.#client) {
-      await this.#client.sendEmail({
+      await this.#client.sendMail({
         from: this.#from,
         to,
         replyTo: this.#replyTo,
         subject,
-        react,
+        html: render(react),
       });
 
       return;