SMTP service fast and reliable

Add email functionality using SMTP without the need for any external libraries or dependencies.

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Quick Integration

Connect easily with any service

Add SMTP seamlessly to your existing stack,and with the tools you already know and love.

Easy to use

Integrate your favorite framework

Copy-and-paste some credentials and you're ready to send. Quickly plug your account and start delivering emails.

Get StartedDocumentation
import nodemailer from 'nodemailer';


async function main() {
  const transporter = nodemailer.createTransport({
    host: 'smtp.resend.com',
    secure: true,
    port: 465,
    auth: {
      user: 'resend',
      pass: 're_123456789',
    },
  });


  const info = await transporter.sendMail({
    from: 'onboarding@resend.dev',
    to: 'delivered@resend.dev',
    subject: 'Hello World',
    html: '<strong>it works!</strong>',
  });


  console.log('Message sent: %s', info.messageId);
}


main().catch(console.error);
Supabase
Resend is our most popular SMTP integration, and is well-loved by developers. It's the perfect compliment to Supabase.
Paul Copplestone

Paul Copplestone

Founder & CEO of Supabase

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Secure

Encrypt your SMTP connection

Protect the communication between the email client and the mail server. Define ports to instruct the type of security you want to use in your SMTP connection.

SMTPS

SMTPS (Simple Mail Transfer Protocol Secure) is a protocol that provides a secure connection for sending email messages. It operates on ports 465 and 2465 and immediately connects via SSL and TLS.

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STARTTLS

STARTTLS is a protocol command to upgrade an insecure connection to a secure one. It uses ports 25, 587, and 2587 and allows the communication to be encrypted using SSL and TLS.

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Dependable

SMTP service you can count on

Because your app demands elasticity, your team requires stability, and your mission-critical projects demand top-notch security.

99.9% uptime

A service built from the ground up to be highly available, reliable, and scalable.

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Secure & compliant

Committed to the security and privacy of customer data, Resend is GDPR and SOC 2 compliant.

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Premium support

Get the help you need, whenever you need it, with response SLA's and a dedicated Slack channel.

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Start sending in minutes

Resend delivers mission-critical emails for some of the fastest growing teams.

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