SMTP Relay

Send emails through SendMesh using standard SMTP. Drop-in replacement for any app that supports SMTP configuration.

SMTP relay coming soon

The SMTP relay service is under development. Use the REST API or an official SDK for sending emails now. The code examples below show the configuration you'll use once SMTP is live.

SMTP Settings

SMTP Host	smtp.sendmesh.co
Port (TLS)	587 (recommended)
Port (SSL)	465
Encryption	STARTTLS (port 587) or SSL/TLS (port 465)
Username	Your API public key (pk_live_xxx)
Password	Your API secret key (sk_live_xxx)
Authentication	PLAIN or LOGIN

High Throughput

Up to 10,000 emails/second per connection

TLS Encryption

STARTTLS and direct SSL/TLS supported

Full Tracking

Opens, clicks, bounces tracked automatically

Code Examples

javascript

const nodemailer = require('nodemailer');

const transporter = nodemailer.createTransport({
  host: 'smtp.sendmesh.co',
  port: 587,
  secure: false, // STARTTLS
  auth: {
    user: 'pk_live_your_public_key',  // Your API public key
    pass: 'sk_live_your_secret_key',  // Your API secret key
  },
});

const info = await transporter.sendMail({
  from: '"Your App" <hello@yourdomain.com>',
  to: 'user@example.com',
  subject: 'Hello from SendMesh SMTP',
  html: '<h1>Welcome!</h1><p>Sent via SMTP relay.</p>',
});

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

How SMTP Relay Works

Your app connects to smtp.sendmesh.co and authenticates with your API keys

You send emails using standard SMTP commands (MAIL FROM, RCPT TO, DATA)

SendMesh queues the email, checks suppression lists, and applies rate limits

The email is delivered via AWS SES with full DKIM/SPF authentication

Delivery events (bounce, open, click) are tracked and available via webhooks and API

Need to send now?

The REST API is live and ready. SMTP relay is coming soon.

Use REST API