Introducing Zeabur Email

We're excited to introduce Zeabur Email — an enterprise-grade email sending API service built for developers who need reliable email delivery without the complexity.

Why Zeabur Email?

Sending emails from your application shouldn't require configuring SMTP servers, managing delivery reputation, or building queue infrastructure from scratch. Zeabur Email gives you a simple REST API so you can focus on your product.

Core Features

Simple REST API

Integrate email sending into your application with just a few lines of code. No SDKs to install — a single HTTP request is all you need.

curl -X POST https://api.zeabur.com/v1/zsend/emails \
  -H "Authorization: Bearer zs_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "from": "[email protected]",
    "to": ["[email protected]"],
    "subject": "Welcome!",
    "html": "<h1>Welcome to our service</h1>"
  }'

Scheduled & Batch Sending

• Scheduled Sending: Queue emails to be sent at a specific time — perfect for time-zone-aware notifications or marketing campaigns.
• Batch Sending: Send to thousands of recipients with automatic queue management and rate limiting built in.

Attachment Support

Send files along with your emails. Upload attachments via our API and we handle the MIME encoding for you.

Real-time Webhook Notifications

Know exactly what happens to every email you send. Configure webhooks to receive real-time status updates:

• Delivered — the email reached the recipient's inbox
• Bounced — the address was invalid or the mailbox was full
• Complained — the recipient marked it as spam

Custom Domain Management

Send emails from your own domain with full DKIM and SPF verification.

Flexible API Key Permissions

Create multiple API keys with granular permission levels:

• Full Access — send emails, manage domains, configure webhooks
• Send Only — restricted to sending emails
• Read Only — query email status

Security Built In

• HMAC-SHA256 webhook signatures to verify notification authenticity
• DKIM/SPF domain verification for email deliverability and anti-spoofing
• API key isolation to limit blast radius if a key is compromised

Getting Started

Zeabur Email is currently in Beta with a limited number of spots available. To join the beta:

1. Visit the Zeabur Email page and apply for beta access
2. Once approved, add and verify your sending domain
3. Create an API key
4. Send your first email via the REST API

Check out the documentation for the full API reference and guides.

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Questions or feedback? Visit our Forum — we'd love to hear from you.