Integrations
N

Send n8n mail through SecureSMTP

Self-hosted or cloud n8n workflows. Use the HTTP Request node to call our REST endpoint.

API setupLiveAutomation

Set up in under five minutes

Same flow for every integration: account → credentials → paste into n8n → test send.

  1. 1

    Create a free SecureSMTP account

    Sign up at securessmtp.com/signup. Free tier covers 100 emails/month — no card required.

  2. 2

    Create an API key

    Dashboard → Settings → API keys → Create. Copy it once — we hash it after creation.

  3. 3

    Configure the n8n webhook

    n8n → New workflow → HTTP Request node → Method: POST → URL: https://api.securessmtp.com/v1/mail/send → Auth: Header Auth (name: Authorization, value: Bearer …).

  4. 4

    Map fields to the API payload

    POST { from, to, subject, html, text } to https://api.securessmtp.com/v1/mail/send with Bearer <api-key>. Most automation tools have a JSON body editor — paste and map.

  5. 5

    Send a test event

    Use n8n's built-in "test" button. The send shows up in our dashboard within a second, and you'll see the delivery confirmation in your inbox shortly after.

JSON body to POSTFull API docs →
POST https://api.securessmtp.com/v1/mail/send
Authorization: Bearer <your-api-key>
Content-Type: application/json

{
  "from":    "site@yourdomain.com",
  "to":      "you@yourdomain.com",
  "subject": "New submission from {{form.name}}",
  "html":    "<p>{{form.message}}</p>"
}

What you get

SPF + DKIM + DMARC aligned

Every send is authenticated. Gmail, Outlook, Apple Mail, Yahoo all see your real domain — never wordpress@yourhost.

AI abuse + spam scoring

Inline classifier catches outbound spam in <80ms. Your IP reputation stays clean even when forms get hammered.

Live delivery dashboard

Every send, open, click, bounce — per-platform, per-form, per-recipient. Webhook events you can pipe into your own analytics.

Queues during outages

If a downstream provider goes dark, we hold the message and retry. Never lose a form submission.

FAQ

How long does setup take?

Five to ten minutes including domain DNS verification. The actual n8n configuration is a single panel.

Do I need to change my domain or sender address?

No. n8n keeps sending from whatever email you configure — we just sign and route it through authenticated infrastructure. Your customers see your real domain.

What happens if SecureSMTP has an outage?

Our relay queues messages and retries with exponential backoff for up to 72 hours. Submissions are never silently dropped.

Can I use my own domain for sending?

Yes — and we recommend it. Verify your domain in the dashboard (one TXT record + one CNAME for DKIM) and everything sends from your address with full SPF + DKIM + DMARC alignment.