Flex PAYG is live, no monthly fee

Transactional email at $0.40 per 1,000. Ship in five minutes, not five meetings.

SendNex is a developer-first email API. One POST, deliverable inboxes, real analytics. $0.40 per 1,000 emails. First 3,000 emails every month are free. No monthly fee.

Start sending free Read the docs

No credit card to start SDKs for Node, Python, .NET DKIM, SPF, DMARC out of the box

Language: cURL

# Send your first email
curl https://api.sendnex.xyz/v1/emails \
  -H "Authorization: Bearer sk_live_..." \
  -H "Content-Type: application/json" \
  -d '{
    "from": "noreply@yourapp.com",
    "to": "alice@example.com",
    "subject": "Welcome to YourApp",
    "html": "<h1>Hi Alice 👋</h1>"
  }'

See Node.js, Python, Go examples in the docs

Built for developers

Everything you need, nothing you don't.

A complete transactional email stack: send, receive, track, and template. No upsells, no surprise add-ons.

Send API

One simple endpoint with batching, attachments, scheduling, and idempotency keys. Sub-200ms p95 from major regions.

Inbound parsing

Receive email at any address on your domain. SendNex parses it and posts a clean JSON payload to your webhook.

Webhooks

Delivered, bounced, opened, clicked, complained. Signed payloads, retries with backoff, full delivery logs you can replay.

Templates

Version-controlled HTML and MJML templates with handlebars variables. Preview, test, and roll back from the dashboard.

Analytics

Real-time dashboards for opens, clicks, bounces, and complaints. Drill into a single recipient or roll up by template.

Domain verification

Guided DKIM, SPF, and DMARC setup with one-click DNS checks. Bring your own domain or use a sandbox to start.

A real request

A POST. A 202. You're done.

No SDK required, but we have one if you want it. Idempotency keys, batch sends, attachments, scheduling, and reply-to are all just fields on the body.

View API reference Browse SDKs

Language: Node.js

const res = await fetch("https://api.sendnex.xyz/v1/emails", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${process.env.SENDNEX_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    from: "noreply@yourapp.com",
    to: "alice@example.com",
    subject: "Your receipt",
    html: "<p>Thanks for your order</p>",
  }),
});

const { id, status } = await res.json();

202 Accepted { "id": "em_3f9c1a", "status": "queued" }

Pricing

Flex PAYG. Pay for emails, not seats.

No monthly minimum. No per-user pricing. Scale from one email to one million on the same simple rate.

Inboxes, not spam folders.

We handle the boring authentication work so your transactional mail actually arrives.

DKIM, SPF, DMARC

Guided setup, auto-rotation of DKIM keys, DMARC report aggregation in your dashboard.

Dedicated IPs

Optional dedicated IPs with managed warm-up schedules for high-volume senders.

Bounce and complaint handling

Automatic suppression lists, replayable webhooks, and per-recipient delivery history.

Security and compliance

TLS in transit, encryption at rest, scoped API keys, and audit logs. SOC 2 Type II in progress.

FAQ

Questions, answered.

How long does it really take to send my first email?

Under five minutes. Sign up, paste a sandbox API key into the curl example above, and you are sending. Verify your domain when you are ready to send to real recipients.

Is there a free tier?

Yes. The first 3,000 emails every month are free on Flex PAYG. After that you pay $0.40 per 1,000 emails with no monthly fee.

How does Flex PAYG compare to Resend, Postmark, and SendGrid?

Most competitor entry plans require a monthly minimum that ranges from about $15 to $25, and the per-email rate is two to three times higher. Flex PAYG charges only for what you send, so you can start small and scale without an upgrade cliff.

Do you support inbound email?

Yes. Point an MX record at SendNex, define a route, and we parse incoming messages and POST a clean JSON payload to your webhook. Attachments included.

Which SDKs do you offer?

Official SDKs for Node.js, Python, and .NET. The HTTP API is small enough that any HTTP client works fine.

Where is SendNex hosted?

Production runs in multiple regions across major cloud providers, with the API edge in front of your nearest region. Your data sits in the region you choose at signup.

Who is behind SendNex?

SendNex is built by a small engineering team based in Lagos, Nigeria, serving developers worldwide. We started SendNex because we kept paying for email plans we never used.

Can I migrate from another provider?

Yes. Most teams switch in an afternoon: verify your domain, swap the API base URL, and replay your webhooks. Email us at hello@sendnex.xyz and our engineering team will help.

Send your first email in five minutes.

$0.40 per 1,000 emails. First 3,000 emails every month are free. No monthly fee.

Get started Read the docs