What is transactional email and how do I send it?

Transactional email is the automated one-to-one mail your app sends — password resets, OTPs, receipts, order confirmations, and alerts. MisarMail delivers it through a REST API (POST to api.misar.io/mail/v1/send) or a drop-in SMTP relay, with sub-second handoff, reusable dynamic templates, and real-time delivery, open, click, and bounce webhooks.

Do you offer an SMTP relay as well as an API?

Yes. You can send via the REST API or point your existing application at our SMTP relay with your credentials. The SMTP option requires no code changes — just update your SMTP host, port, and credentials.

How fast is transactional delivery?

MisarMail accepts your message with sub-second handoff and queues it for immediate delivery. Dedicated IP pools and authentication ensure time-sensitive mail like OTPs arrives quickly and reliably.

Can I track whether transactional emails were delivered?

Yes. Real-time webhooks deliver delivery, open, click, bounce, and complaint events to your endpoint, and searchable message logs let you inspect the status of any individual email.

How do I keep transactional email out of spam?

Authenticate your domain with SPF, DKIM, and DMARC (guided setup included), and MisarMail handles dedicated IP pools, warm-up, and real-time sender reputation monitoring to maintain high inbox placement.

Transactional Email

Transactional email your app can rely on

Deliver password resets, OTPs, receipts, and order confirmations with sub-second handoff. Integrate a REST API or a drop-in SMTP relay, reuse dynamic templates, and track every message with real-time webhooks.

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How to send transactional email

Authenticate your domain

Add SPF, DKIM, and DMARC records with guided setup so your messages are trusted from day one.

Choose API or SMTP

POST to the REST API at api.misar.io/mail or point your app at the drop-in SMTP relay — no rewrite required.

Build dynamic templates

Create reusable templates with merge variables for receipts, alerts, and confirmations.

Track with webhooks

Receive real-time delivery, open, click, bounce, and complaint events at your endpoint.

A developer-first sending engine

Everything your application needs to send mission-critical email.

Sub-second handoff

Low-latency API and SMTP endpoints accept your message and queue it for immediate delivery.

REST API & SMTP relay

Integrate however you prefer — a clean REST API or a drop-in SMTP relay with no code rewrite.

Dynamic templates

Reusable templates with merge variables keep receipts and alerts consistent and on-brand.

Real-time webhooks

Delivery, open, click, bounce, and complaint events streamed to your endpoint as they happen.

High deliverability

Dedicated IP pools, authentication, and reputation monitoring keep critical mail in the inbox.

Logs & analytics

Searchable message logs and delivery analytics for debugging and audit trails.

Frequently Asked Questions

What is transactional email and how do I send it?: Transactional email is the automated one-to-one mail your app sends — password resets, OTPs, receipts, order confirmations, and alerts. MisarMail delivers it through a REST API (POST to api.misar.io/mail/v1/send) or a drop-in SMTP relay, with sub-second handoff, reusable dynamic templates, and real-time delivery, open, click, and bounce webhooks.
Do you offer an SMTP relay as well as an API?: Yes. You can send via the REST API or point your existing application at our SMTP relay with your credentials. The SMTP option requires no code changes — just update your SMTP host, port, and credentials.
How fast is transactional delivery?: MisarMail accepts your message with sub-second handoff and queues it for immediate delivery. Dedicated IP pools and authentication ensure time-sensitive mail like OTPs arrives quickly and reliably.
Can I track whether transactional emails were delivered?: Yes. Real-time webhooks deliver delivery, open, click, bounce, and complaint events to your endpoint, and searchable message logs let you inspect the status of any individual email.
How do I keep transactional email out of spam?: Authenticate your domain with SPF, DKIM, and DMARC (guided setup included), and MisarMail handles dedicated IP pools, warm-up, and real-time sender reputation monitoring to maintain high inbox placement.

Start sending transactional email

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