# Transactional Email Infrastructure Setup Under 5 Clicks

Send OTPs, password resets, receipts, and system alerts with guaranteed inbox placement. No SMTP configuration, no DNS headaches, no app passwords.

[Get Started Free](/content/pricing/index.html) [View Docs](https://docs.keplars.com/)

7 day free trial. No credit card required.

< 5s Average Time to Inbox

Delivered fast via optimized infrastructure and multi-region routing.

99.77% Deliverability Rate

SPF, DKIM, DMARC-ready with trusted providers for maximum inbox placement.

100% Delivery Transparency

Track delivery, opens, clicks, and full email timelines in one place.

## Trusted by world-class developers & industry leading teams

## Everything You Need to Send with Confidence

Built for developers who need reliable, fast, and measurable email delivery without the infrastructure overhead.

### Instant Delivery

OTPs, password resets, and alerts reach inboxes in milliseconds, not seconds. No queues, no delays.

### 99.77% Inbox Rate

Backed by Gmail, Google Workspace, and Outlook infrastructure with SPF, DKIM, and DMARC verified by default.

### Under 5-Minute Setup

Generate API keys or SMTP credentials from your dashboard and send your first email in minutes. No DNS fiddling.

### Developer-First API

REST API, SMTP relay, and Webhooks. Send from any language or framework.

### Custom Domain Support

Bring your own domain and send as hello@yourdomain.com with full SPF + DKIM + DMARC verification.

### Delivery Analytics

Track opens, clicks, bounces, and delivery status in real time. Detailed logs for every transactional event.

REST APIasync

send-email.js

```javascript
const axios = require('axios');

const client = axios.create({
  baseURL: 'https://api.keplars.com',
  headers: {
    'Authorization': 'Bearer kms_3725865b5eee62f0.*******************************'
  }
});

await client.post('/api/v1/send-email/instant', {
  to: ['user@example.com'],
  subject: 'Your 2FA Code',
  body: '<b>Your verification code is: 123456</b>',
  is_html: true
});
```

SMTP Relayport 587

smtp-config.txt

```bash
Host:     smtp.keplars.com
Port:     587  (recommended, STARTTLS)
Security: STARTTLS
Username: [Your generated username]
Password: [Your generated password]
```

### Integrate in minutes, not days.

Full API reference, webhook docs, and code examples. Everything you need to go live fast.

[Read Documentation](https://docs.keplars.com/)

Webhooks

Real-time event notifications for every email lifecycle state.

## Start sending transactional emails in under 5 clicks

5,000 emails/month for $1. No credit card needed.

[Customise your Pricing](/content/pricing/index.html) [Explore Marketing Emails](/content/marketing-emails/index.html)

Free for all paid plans

Enceladas

The Unified Email Editor

[Visit Site](https://enceladas.com/)

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