--- title: Send emails description: Send your first email using the Cloudflare Email Service Workers binding, REST API, or SMTP. image: https://edgetunnel-b2h.pages.dev/dev-products-preview.png --- > Documentation Index > Fetch the complete documentation index at: https://edgetunnel-b2h.pages.dev/email-service/llms.txt > Use this file to discover all available pages before exploring further. [Skip to content](#%5Ftop) # Send emails Send your first email using the Workers binding, the REST API, or SMTP. Send emails from your applications using Cloudflare Email Service. You can use the **Workers binding** for applications built on Cloudflare Workers, the **REST API** from any platform, or **SMTP** from any SMTP-capable application or mail client. Note You must be using Cloudflare DNS to use Email Service. ## Set up your domain Before using Email Sending, configure your domain. 1. In the Cloudflare dashboard, go to **Compute** \> **Email Service** \> **Email Sending**. [ Go to **Email Sending** ](https://dash.cloudflare.com/?to=/:account/email-service/sending) 2. Select **Onboard Domain**. 3. Choose a domain from your Cloudflare account. Optionally review the DNS records that Cloudflare will add to the `cf-bounce` subdomain of your domain: * MX records to route bounce emails to Cloudflare. * TXT record for SPF to authorize sending emails. * TXT record for DKIM to provide authentication for emails sent from your domain. * TXT record for DMARC on `_dmarc.yourdomain.com`. 4. Select **Done**. Note DNS changes can take up to 24 hours to propagate globally, but usually complete within 5-15 minutes for domains using Cloudflare DNS. Once your domain is onboarded, you can start sending emails. ## Send your first email You can send your first email using the Workers binding, the REST API, or SMTP. * [ Workers ](#tab-panel-9261) * [ API ](#tab-panel-9262) * [ SMTP ](#tab-panel-9263) If you are building on Cloudflare Workers, you can use the Workers binding for native email sending. Start by creating a new Worker project. 1. Create a new Worker project: npm yarn pnpm ``` npm create cloudflare@latest -- email-service-tutorial ``` ``` yarn create cloudflare email-service-tutorial ``` ``` pnpm create cloudflare@latest email-service-tutorial ``` When prompted, select **"Hello World" Worker** as the template. 2. Add the email binding to your Wrangler configuration file: * [ wrangler.jsonc ](#tab-panel-9259) * [ wrangler.toml ](#tab-panel-9260) **JSONC** ```jsonc { "send_email": [ { "name": "EMAIL", "remote": true, }, ], } ``` **TOML** ```toml [[send_email]] name = "EMAIL" remote = true ``` 3. Create your Worker code in `src/index.ts`: **TypeScript** ```ts // Configuration - Update these values const YOUR_DOMAIN = "yourdomain.com"; // Replace with your verified domain const RECIPIENT_EMAIL = "recipient@example.com"; // Replace with your email to receive test emails export default { async fetch(request: Request, env: Env): Promise { // Send a welcome email const response = await env.EMAIL.send({ to: RECIPIENT_EMAIL, from: `welcome@${YOUR_DOMAIN}`, subject: "Welcome to our service!", html: "

Welcome!

Thanks for signing up.

", text: "Welcome! Thanks for signing up.", }); return new Response(`Email sent: ${response.messageId}`); }, } satisfies ExportedHandler; ``` 4. Use `npx wrangler dev` to develop your Worker project and send emails. This runs your code locally while connecting to Cloudflare Email Service (using [remote bindings](https://edgetunnel-b2h.pages.dev/workers/local-development/#remote-bindings)). ```sh npx wrangler dev # ⎔ Starting remote preview... # Total Upload: 24.96 KiB / gzip: 6.17 KiB # [wrangler:info] Ready on http://localhost:8787 ``` 5. Deploy your Worker: ```sh npm run deploy ``` After deploying, test that your Worker can send emails: 1. Visit your Worker URL in a browser (shown in the deploy output, for example: `https://email-service-tutorial..workers.dev`). 2. You should see a response like `Email sent: `. 3. Check the inbox for the email address you specified in `RECIPIENT_EMAIL`. If you do not see the email, check your spam folder. Send an email with a single `curl` command. Replace `{account_id}` with your [Cloudflare account ID](https://edgetunnel-b2h.pages.dev/fundamentals/account/find-account-and-zone-ids/) and `` with an [API token](https://edgetunnel-b2h.pages.dev/fundamentals/api/get-started/create-token/). ```bash curl "https://api.cloudflare.com/client/v4/accounts/{account_id}/email/sending/send" \ --header "Authorization: Bearer " \ --header "Content-Type: application/json" \ --data '{ "to": "recipient@example.com", "from": "welcome@yourdomain.com", "subject": "Welcome to our service!", "html": "

Welcome!

Thanks for signing up.

", "text": "Welcome! Thanks for signing up." }' ``` A successful response includes the delivery status for each recipient: ```json { "success": true, "errors": [], "messages": [], "result": { "delivered": ["recipient@example.com"], "permanent_bounces": [], "queued": [] } } ``` For more details, see the [REST API reference](https://edgetunnel-b2h.pages.dev/email-service/api/send-emails/rest-api/). Send an email with a single `curl` command. Replace `` with a [Cloudflare API token](https://edgetunnel-b2h.pages.dev/fundamentals/api/get-started/create-token/) that has the **Email Sending: Edit** permission, and replace the `--mail-from` and `--mail-rcpt` addresses with your own. ```sh cat > mail.txt <" \ --mail-from "welcome@yourdomain.com" \ --mail-rcpt "recipient@example.com" \ --upload-file mail.txt ``` The sender domain (`welcome@yourdomain.com`) must be onboarded for [Email Sending](https://edgetunnel-b2h.pages.dev/email-service/configuration/domains/) on the account that owns the API token. For connection details, authentication, response codes, and language-specific examples, see the [SMTP reference](https://edgetunnel-b2h.pages.dev/email-service/api/send-emails/smtp/). ## Next steps Now that you can send emails, explore advanced features: * **[Route incoming emails](https://edgetunnel-b2h.pages.dev/email-service/get-started/route-emails/)** \- Process emails sent to your domain * **[API reference](https://edgetunnel-b2h.pages.dev/email-service/api/send-emails/)** \- Complete API documentation * **[Examples](https://edgetunnel-b2h.pages.dev/email-service/examples/)** \- Real-world implementation patterns ```json {"@context":"https://schema.org","@type":"TechArticle","@id":"https://edgetunnel-b2h.pages.dev/email-service/get-started/send-emails/#page","headline":"Send emails · Cloudflare Email Service docs","description":"Send your first email using the Cloudflare Email Service Workers binding, REST API, or SMTP.","url":"https://edgetunnel-b2h.pages.dev/email-service/get-started/send-emails/","inLanguage":"en","image":"https://edgetunnel-b2h.pages.dev/dev-products-preview.png","dateModified":"2026-06-25","publisher":{"@type":"Organization","name":"Cloudflare","url":"https://www.cloudflare.com/"},"isPartOf":{"@type":"WebSite","@id":"https://edgetunnel-b2h.pages.dev/#website","name":"Cloudflare Docs","url":"https://edgetunnel-b2h.pages.dev/"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/directory/","name":"Directory"}},{"@type":"ListItem","position":2,"item":{"@id":"/email-service/","name":"Email Service"}},{"@type":"ListItem","position":3,"item":{"@id":"/email-service/get-started/","name":"Getting started"}},{"@type":"ListItem","position":4,"item":{"@id":"/email-service/get-started/send-emails/","name":"Send emails"}}]} ```