v1.0 — smtp relay, live

Send email.
That's it.

JustSMTP is a transactional email relay on top of Amazon SES. We handle the IAM policies, DKIM rotation, and region switching — you just set SMTP_HOST and go.

Start free Read the docs

node.js

// npm install nodemailer
import nodemailer from 'nodemailer';
 
const transport = nodemailer.createTransport({
  host: 'smtp.justsmtp.com',
  port: 587,
  auth: {
    user: process.env.SMTP_USER,
    pass: process.env.SMTP_PASS,
  },
});
 
await transport.sendMail({
  from: 'hello@mail.acme.io',
  to: 'sarah@figma.com',
  subject: 'Welcome to Acme',
  html: '<b>You are in.</b>',
});

· 99.98% uptime · < 40ms median handoff · no AWS account required

/how-it-works

Three steps, then you never think about it again.

Verify your domain

Paste your domain. We generate SES-compatible DKIM + SPF records. Usually verifies within a minute of DNS propagation.

Generate SMTP credentials

Create a user/password pair per environment — prod, staging, that weird branch you forgot about. Revoke any of them with one click.

Point your app at us

Host is smtp.justsmtp.com, port 587 or 465. Swap it into your existing mailer. Nothing else changes.

/why

The boring things we do so you don't have to.

SES pricing, without SES.

We pass through Amazon's rates with a small relay margin. No surprise markup at 100k.

No AWS account, ever.

You don't touch IAM. You don't approve region increases. The SES sandbox is our problem, not yours.

DKIM rotation on autopilot.

Keys rotate quarterly. We update the records so you never wake up to a DKIM-fail incident.

Logs that don't lie.

Every relay attempt lands in your log stream — sent, deferred, bounced, dropped — with the real SMTP response.

/pricing

Priced by volume. Nothing else.

No seat counts, no "per domain" gotchas. Pick the tier that matches your monthly sends.

Hobby

$0/mo

1,000 emails / mo

Everything you need to ship your side project.

1 sending domain
SMTP relay + 3 credential pairs
Activity logs (7 days)
Community support

Start free

Starter popular

$12/mo

50,000 emails / mo

For side projects graduating to real users.

5 sending domains
Unlimited credential pairs
Activity logs (30 days)
Email support
No branded footer

Start Starter

Pro

$39/mo

500,000 emails / mo

For growing products with serious volume.

Unlimited domains
Dedicated IP (optional)
Activity logs (90 days)
Priority support
Webhooks + REST API

Start Pro

> ready_

Your first 1,000 emails are free.

No credit card, no sales call. Upgrade when you outgrow the free tier.

Create an account See pricing

Send email.That's it.