3,000 emails/mo · Always free

Free Email API & SMTP.
3,000 emails/month.

An Email API and SMTP service for transactional, cold, newsletter, and marketing email. Dedicated IPs and delivery monitoring included. Free up to 3,000 emails/month.

Start sending free See how it works

Unlimited contacts, domains & team seats

For developers

Start sending
in minutes.

Simple API and SDKs for every language. Drop into your stack and send your first email in under 5 minutes.

index.js

Ready to integrate?

Free forever up to 3,000 emails/month.

View full docs Start free

SMTP Relay

Zero config.
Drop right in.

Works with any framework or library that supports SMTP. Just swap the host and you're sending.

✓ Works with Nodemailer, PHPMailer, ActionMailer, etc.
✓ TLS on port 587, SSL on port 465
✓ Your API key is both username and password
✓ Real-time delivery logs and bounce tracking

SMTP docs Get your credentials

smtp-config.js

// Works with any SMTP-compatible library

// ── Nodemailer (Node.js)
const transporter = nodemailer.createTransport({
  host: 'smtp.emailsbit.com',
  port: 587,
  secure: false,
  auth: {
    user: 'YOUR_API_KEY',
    pass: 'YOUR_API_KEY',
  },
});

await transporter.sendMail({
  from: '"Your App" <[email protected]>',
  to:   '[email protected]',
  subject: 'Welcome!',
  html: '<h1>You are in.</h1>',
});

// ── PHPMailer
$mail->Host     = 'smtp.emailsbit.com';
$mail->SMTPAuth = true;
$mail->Username = 'YOUR_API_KEY';
$mail->Password = 'YOUR_API_KEY';
$mail->SMTPSecure = 'tls';
$mail->Port = 587;

For Marketers

Cold email &
newsletters that convert.

1,800+ templates, drag & drop editor, audience segmentation and real-time analytics. No developer needed.

✓ 1,800+ ready-to-use templates
✓ Drag & drop editor — no code ever
✓ Audience segmentation and drip sequences
✓ Real-time opens, clicks, and conversions

Explore marketing tools Start free

Avg. open rate

41%

vs. 21% industry average

Templates

1,800+

ready to send

Deliverability

99%

inbox placement

Email Validator

Clean your list
before you send.

Run every address through 8 checks — syntax, domain, spam traps, disposable emails, catch-alls, and more — before it ever touches your sender reputation.

✓ 100 free verifications, no card needed
✓ Bulk list upload or single-email API
✓ Detects hard bounces & spam traps
✓ 99.6% accuracy, ~200ms per check

Try the Validator

Checks per email

Accuracy

99.6%

Free credits

100

What gets checked

Syntax validation, domain & SMTP check, hard bounce detection, spam trap detection, disposable email detection, catch-all domains, MTA validation, and duplicate removal — all in a single API call or CSV upload.

Warm-up

Build trust
before you scale.

Real inboxes exchange real conversations with yours — opening, replying, and occasionally starring your emails — so mailbox providers learn to trust you as a legitimate sender. No DNS changes needed.

✓ 100–200+ real messages a day
✓ Works with Gmail, Outlook, Yahoo & more
✓ Pulls emails out of spam automatically
✓ 14-day free trial, no credit card

Try Warm-up

Msgs / day

100+

DNS changes

Free trial

14d

How it works

Connect your inbox — no DNS or MX changes. Real accounts in the network email you daily, and every message is opened, rescued from spam if it lands there, marked as read, and replied to — keeping a genuine back-and-forth thread that builds sender reputation over time.

PRICING PHILOSOPHY

Included in every plan.
Others charge extra.

Based on publicly available plans, 2026. "Others" = industry average across major ESP providers.

Free Email API & SMTP. 3,000 emails/month.

Start sendingin minutes.

Zero config.Drop right in.

Cold email &newsletters that convert.

Clean your listbefore you send.

Build trustbefore you scale.

Included in every plan. Others charge extra.