Send payment confirmations, OTPs, invoices, account notifications and system alerts from your verified domain through Alert21. Use the dashboard for manual sending or connect your application with the Email API.
Alert21 Email is built for messages triggered by real business events. Configure your sending identity once, create reusable templates, send from the dashboard or API, and review email activity from the same Alert21 account used for your other business alerts.
Send business email from domains you control. Add your domain in Alert21, complete the required verification, and manage its status from one dashboard.
Create the From addresses used by your application and teams. Keep sender identity organized by product, brand or operational workflow.
Store reusable transactional templates so your systems can send consistent messages without rebuilding the email content for every event.
Send one-off transactional emails from the Alert21 dashboard when an automated API trigger is not required.
Trigger email directly from your backend, SaaS product, fintech workflow, e-commerce application or internal system using Alert21 API credentials.
Review email activity and request history from the dashboard for operational visibility and troubleshooting.
Track Email usage and billing from your Alert21 account so sending operations and commercial controls stay together.
| Use Case | Examples |
|---|---|
| Authentication & security | Login codes, password resets, account security notices |
| Payments & fintech | Payment confirmations, transaction updates, settlement or KYC status |
| SaaS | Welcome emails, billing notices, subscription and account events |
| E-commerce | Order confirmations, shipment updates, refund or return notices |
| Education | Admission, fee, exam and account notifications |
| Travel & hospitality | Booking confirmations, check-in information and itinerary updates |
| Internal operations | System alerts and workflow notifications generated by business software |
Use the production Alert21 Email API to trigger event-driven email from your backend. Keep credentials server-side, use verified sending identities, and log the Alert21 request identifier returned by the live API contract.
curl -X POST https://api.alert21.in/v1/email/send -H "Authorization: Bearer YOUR_API_KEY" -H "Content-Type: application/json" -d '{
"to": "user@example.com",
"from": "alerts@yourbrand.com",
"template_id": "tpl_order_confirm_01",
"variables": {
"customer_name": "Amit",
"order_id": "ORD-98214",
"amount": "₹2,499"
}
}' {
"success": true,
"message_id": "msg_em_8f49a20bc12",
"status": "queued",
"recipient": "user@example.com",
"created_at": "2026-09-04T12:00:00Z"
}Use Alert21 Email on a usage-based billing model and manage your active email balance or billing from the dashboard. Sign in to view the rate applicable to your account, or contact our team for higher-volume requirements.
Quick answers to common questions about Alert21 Email API, domain verification, and transactional delivery.
Alert21 Email is the transactional email service inside Alert21. It lets businesses configure sending domains and sender emails, create templates, send from the dashboard or API, and review email logs and billing from one account.
Yes. Add a domain you control in the Sending Domains section and complete the verification steps displayed in your Alert21 account before using it as a sending identity.
Yes. Use the Alert21 Email API to trigger transactional messages from your backend or application after your sending identity is configured.
Yes. The Email module also includes dashboard sending for transactional messages that need to be sent manually.
Yes. Email Templates are available so commonly used transactional messages can be managed and reused from the Alert21 platform.
Use Email Logs to review the email activity recorded by Alert21. The exact status information shown depends on the events currently returned and stored by the active email infrastructure.
Email Balance / Billing is available in the Alert21 user panel. Public pricing should follow the active commercial rate configured for the account and should not be hard-coded on this page unless the rate is finalized.
This launch page is focused on transactional email triggered by business events. Promotional or bulk marketing capabilities should only be advertised if they are separately enabled and approved for the customer account.
Create your Alert21 account, configure a sending domain, and start sending transactional email from the dashboard or your application.