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Transactional email infrastructure

Transactional Email API
Built for Reliable Delivery

Send transactional emails reliably with Notifiva — a developer-first email API and SMTP service for password resets, verification codes, order confirmations, notifications, and other critical messages.

REST APISMTP relaySPF · DKIM · DMARCDelivery webhooks

Built for the emails your product can't afford to lose.

SaaSEcommerceFintechDeveloper toolsMarketplacesPlatforms

01 — Integration

Send your first email in minutes

One authenticated request, one message ID back. Pick a language, copy the snippet, replace the key. The examples below are illustrative — see the API reference for the full schema.

{{ line.n }}{{ p.t }}
response202 accepted 
{
  "success": true,
  "code": 202,
  "message": null,
  "data": {
    "messageId": "01a0d767-6b46-7ed6-9ed9-8cd33be06fe3",
    "to": "[email protected]",
    "submittedAt": "2026-09-25T07:11:14.246781+00:00"
  },
  "errors": null
}

Auth

Bearer API keys, scoped per environment.

Idempotency

Retry safely with an idempotency key.

Events

Every state change is logged and streamable.

02 — Integration paths

One platform. Two ways to send.

Start with the API in a new service, or point an existing application at the SMTP relay. Both routes land in the same pipeline, with the same logs and the same delivery events.

{{ p.tag }}

{{ p.title }}

{{ p.desc }}

  • {{ it }}
{{ p.snippet }}

03 — Delivery

Built for the emails that matter.

A verification code is worthless five minutes late. Messages are queued, authenticated, routed and handed to the receiving provider — and every state transition is recorded against the message ID.

Message lifecycle

{{ s.state }}

{{ s.desc }}
event stream — example data streaming
{{ e.time }} {{ e.state }} {{ e.detail }}

04 — Deliverability

Protect your sender reputation from day one.

Notifiva is built to support reliable transactional delivery and modern sender authentication standards. You verify your domain once; bounces, complaints and suppressions are handled for you afterwards.

SPF
Publishes which servers may send mail for your domain.
DKIM
Signs every message so receivers can verify it wasn't altered in transit.
DMARC
Tells mailbox providers how to treat messages that fail authentication — and reports back.
domain — example.com
{{ r.type }} {{ r.host }} {{ r.status }}
{{ g }}

05 — Observability

Know what happened to every email.

Search by message ID, recipient or tag. Read the full event history, the provider response and the processing time. Figures shown here are example data.

{{ m.label }}

{{ m.value }}

{{ m.note }}

Sends — last 24h

example data
00:0006:0012:0018:00now

06 — Use cases

Power the emails behind every critical user action.

{{ u.kind }}

{{ u.title }}

  • {{ i }}
{{ u.tag }}

07 — Templates

The messages your users actually open.

inbox preview
Acme

{{ preview.heading }}

{{ preview.body }}

{{ preview.cta }}

{{ preview.footnote }}

Subject

{{ preview.subject }}

Trigger

{{ preview.trigger }}

Why it matters

{{ preview.why }}

08 — Webhooks

Your infrastructure should know when your email does.

Signed HTTPS callbacks fire on every state change, with retries and a replayable event log. Suppress a hard-bouncing address, notify support on a complaint, or reconcile against your own records — without polling.

{{ h }}

notifiva

your app

POST /webhooks/notifiva
{
  "type": "email.delivered",
  "message_id": "msg_01J8QF3K2A",
  "timestamp": "2026-03-04T09:42:20Z"
}

09 — Reference

Transactional email, defined.

{{ f.q }}

{{ f.a }}

10 — Pricing

Start free. Scale when you need to.

Priced on monthly volume. Overages are billed per additional 1,000 emails — no plan jump required.

View full pricing

{{ t.name }}

{{t.badge }}

{{ t.desc }}

{{ t.price }} {{ t.per }}
{{ t.staticVolume }}

{{ t.overageLine }}

  • {{ f }}
Every plan includes API + SMTP Domain authentication Webhooks & logs No credit card to start

Your application has something to say.

Send it with infrastructure built for reliable transactional email.

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