Servidor de e-mail em NodeJS
- #JavaScript
Nodemailer é uma ferramenta contruida em TypeScript que roda com o NodeJS e permite o envio de e-mail com facilidade, uma solução simples e fácil.
Para iniciar, crie uma conta válida para envio dos e-mails, neste exemplo criei no Outlook.com: noreplaymessage@outlook.com.br.
Bom, agora é cógigo.
/package.json
{
"name": "nodemailer",
"version": "1.0.0",
"description": "E-mail Server",
"main": "server.ts",
"engines": {
"node": ">=16"
},
"scripts": {
"start:dev": "tsx watch src/server.ts",
"start": "node build/server.js",
"build": "tsc"
},
"author": "Alexandre Jr",
"license": "ISC",
"dependencies": {
"body-parser": "^1.20.2",
"dotenv": "16.3.1",
"express": "^4.18.2",
"ip": "^1.1.8",
"nodemailer": "^6.9.3",
"zod": "^3.21.4"
},
"devDependencies": {
"@types/express": "^4.17.17",
"@types/ip": "^1.1.0",
"@types/node": "20.3.3",
"@types/nodemailer": "^6.4.9",
"tsx": "3.12.7",
"typescript": "^5.1.6"
}
}
/tsconfig.json
{
"compilerOptions": {
"target": "es2016",
"module": "commonjs",
"declaration": true,
"outDir": "./build",
"esModuleInterop": true,
"forceConsistentCasingInFileNames": true,
"strict": true,
"skipLibCheck": true
},
"include": ["src/**/*"]
}
/.env
SMTP_MAIL="smtp-mail.outlook.com"
SMTP_MAIL_HOST="smtp-mail.outlook.com"
SMTP_MAIL_PORT=587
SMTP_MAIL_USER="noreplaymessage@outlook.com.br"
SMTP_MAIL_PASSWORD="*************"
HTTP_SERVER_PORT=3030
/src/server.ts
import ip from "ip";
import express from "express";
import nodemailer from "nodemailer";
import bodyParser from "body-parser";
import { env } from "./env/index";
import { z } from "zod";
import { badRequest, internalServerError } from "./messages/errors";
import { success } from "./messages/success";
const emailServer = express();
const jsonParser = bodyParser.json();
emailServer.post("/send-email", jsonParser, async (req, res) => {
const createEmailBodySchema = z.object({
to: z.string().email(),
subject: z.string(),
text: z.string(),
html: z.string(),
});
const validateBody = createEmailBodySchema.safeParse(req.body);
const { to, subject, text, html } = req.body;
if (validateBody.success) {
const transport = nodemailer.createTransport({
host: env.SMTP_MAIL_HOST,
port: env.SMTP_MAIL_PORT,
auth: {
user: env.SMTP_MAIL_USER,
pass: env.SMTP_MAIL_PASSWORD,
},
});
const message = {
from: env.SMTP_MAIL_USER,
to,
subject,
text,
html,
};
transport.sendMail(message, (err) => {
if (err) {
return res.status(500).send(internalServerError());
}
return res.status(200).send(success("Email successfully sent."));
});
} else {
return res.status(400).send(badRequest("Invalid or missing parameter."));
}
});
emailServer.listen(env.HTTP_SERVER_PORT, () => {
console.log(
`\nE-mail Server \nHttp Server is running on IP Address = ${ip.address()} : ${
env.HTTP_SERVER_PORT
} \nTo stop use control + C\n`
);
});
/src/env/index.ts
import "dotenv/config";
import { z } from "zod";
const envSchema = z.object({
SMTP_MAIL: z.string(),
SMTP_MAIL_HOST: z.string(),
SMTP_MAIL_PORT: z.coerce.number().default(587),
SMTP_MAIL_USER: z.string(),
SMTP_MAIL_PASSWORD: z.string(),
HTTP_SERVER_PORT: z.coerce.number().default(3030),
});
const _env = envSchema.safeParse(process.env);
if (_env.success === false) {
console.error("Invalid environment variable", _env.error.format());
throw new Error("Invalid environment variable");
}
export const env = _env.data;
/src/messages/errors.ts
export function badRequest(message?: string) {
return {
success: false,
statusCode: 400,
message: [],
error: [{ error: message ? message : "Invalid or missing parameter." }],
};
}
export function notFound(message?: string) {
return {
success: false,
statusCode: 404,
message: [],
error: [{ error: message ? message : "Not found, is not registered." }],
};
}
export function internalServerError() {
return {
success: false,
statusCode: 500,
message: [],
error: [
{
error: "Server problems, please try again later.",
},
],
};
}
/src/messages/success.ts
export function success(message?: string) {
return {
success: true,
statusCode: 200,
message: [message],
error: [],
};
}
Este foi o último arquivo. Crie o projeto com tudo na sua devida pasta e tudo funcionará.
Espero ter ajudado.
Abraço.
