# Cloudflare Workers & Hono at the Edge: Ultra-Low Latency Email Dispatch

_By Tayyab Mughal, Founder & AI Chief · 30 July 2026 · 1 min read_

> Deploying global, ultra-low latency transactional email routing at the edge using Cloudflare Workers, Hono, and SadaSend.

Execute email dispatch within 5ms of your users globally by deploying lightweight Hono applications to Cloudflare Workers.

## Why edge runtimes excel at transactional email

Cloudflare Workers run in 300+ cities worldwide with zero cold starts. By pairing the ultrafast Hono framework with SadaSend REST endpoints, webhook ingestion and email dispatch execute with sub-10ms latency.

## Complete Edge Worker (src/index.ts)

Here is the complete Hono worker deployed to Cloudflare Workers.

```typescript
import { Hono } from 'hono';

type Bindings = {
  SADASEND_API_KEY: string;
};

const app = new Hono<{ Bindings: Bindings }>();

app.post('/api/send-alert', async (c) => {
  const body = await c.req.json<{ recipient: string; title: string; details: string }>();

  const res = await fetch('https://api.sadasend.com/v1/emails', {
    method: 'POST',
    headers: {
      'Authorization': `Bearer ${c.env.SADASEND_API_KEY}`,
      'Content-Type': 'application/json',
    },
    body: JSON.stringify({
      to: body.recipient,
      subject: `[Alert] ${body.title}`,
      text: body.details,
    }),
  });

  const data = await res.json();
  return c.json(data, res.status as any);
});

export default app;
```

## Deployment in 30 Seconds

Deploy immediately with Wrangler: npx wrangler secret put SADASEND_API_KEY && npx wrangler deploy

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_Tags: Cloudflare, Hono, Edge, Serverless_