REST API

https://api.nitrosend.com/v1/my

Authorization: Bearer <your-nitrosend-api-key>

curl -X POST https://api.nitrosend.com/v1/my/messages \
  -H "Authorization: Bearer $NITROSEND_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "channel": "email",
    "to": "user@example.com",
    "subject": "Welcome to our platform",
    "html": "<h1>Welcome!</h1><p>Thanks for signing up.</p>",
    "body": "Welcome! Thanks for signing up."
  }'

curl https://api.nitrosend.com/v1/my/campaigns \
  -H "Authorization: Bearer $NITROSEND_API_KEY"

curl -X POST https://api.nitrosend.com/v1/my/contacts \
  -H "Authorization: Bearer $NITROSEND_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "email": "jane@example.com",
    "first_name": "Jane",
    "last_name": "Doe",
    "opt_in": true
  }'

curl https://api.nitrosend.com/v1/my/account \
  -H "Authorization: Bearer $NITROSEND_API_KEY"

import requests

API_KEY = "nskey_live_your_key_here"
BASE_URL = "https://api.nitrosend.com/v1/my"
HEADERS = {
    "Authorization": f"Bearer {API_KEY}",
    "Content-Type": "application/json"
}

# Send an email
response = requests.post(f"{BASE_URL}/messages", headers=HEADERS, json={
    "channel": "email",
    "to": "user@example.com",
    "subject": "Hello from Python",
    "html": "<h1>Hi!</h1>",
    "body": "Hi!"
})
print(response.json())

# List campaigns
campaigns = requests.get(f"{BASE_URL}/campaigns", headers=HEADERS)
print(campaigns.json())

const API_KEY = "nskey_live_your_key_here";
const BASE_URL = "https://api.nitrosend.com/v1/my";
const headers = {
  Authorization: `Bearer ${API_KEY}`,
  "Content-Type": "application/json",
};

// Send an email
const response = await fetch(`${BASE_URL}/messages`, {
  method: "POST",
  headers,
  body: JSON.stringify({
    channel: "email",
    to: "user@example.com",
    subject: "Hello from Node.js",
    html: "<h1>Hi!</h1>",
    body: "Hi!",
  }),
});
console.log(await response.json());

// List campaigns
const campaigns = await fetch(`${BASE_URL}/campaigns`, { headers });
console.log(await campaigns.json());

require "net/http"
require "json"

API_KEY = "nskey_live_your_key_here"
BASE_URL = "https://api.nitrosend.com/v1/my"

def nitrosend_request(method, path, body = nil)
  uri = URI("#{BASE_URL}#{path}")
  http = Net::HTTP.new(uri.host, uri.port)
  http.use_ssl = true

  request = case method
            when :get then Net::HTTP::Get.new(uri)
            when :post then Net::HTTP::Post.new(uri)
            end

  request["Authorization"] = "Bearer #{API_KEY}"
  request["Content-Type"] = "application/json"
  request.body = body.to_json if body

  JSON.parse(http.request(request).body)
end

# Send an email
result = nitrosend_request(:post, "/messages", {
  channel: "email",
  to: "user@example.com",
  subject: "Hello from Ruby",
  html: "<h1>Hi!</h1>",
  body: "Hi!"
})
puts result

{
  "channel": "email",
  "from": "Acme <hello@example.com>",
  "to": "user@example.com",
  "subject": "Your receipt",
  "html": "<p>Thanks for your purchase.</p>",
  "body": "Thanks for your purchase.",
  "reply_to": "support@example.com",
  "headers": { "X-Entity-Ref-ID": "order_123" },
  "tags": { "kind": "receipt", "plan": "pro" }
}

curl -X POST https://api.nitrosend.com/v1/my/validation_operations/quote \
  -H "Authorization: Bearer $NITROSEND_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"list_id": 42}'

curl -X POST https://api.nitrosend.com/v1/my/validation_operations \
  -H "Authorization: Bearer $NITROSEND_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: validation-list-42-2026-08" \
  -d '{"list_id": 42}'

curl -X POST https://api.nitrosend.com/v1/my/imports \
  -H "Authorization: Bearer $NITROSEND_API_KEY" \
  -F "file=@contacts.csv" \
  -F "resource=contacts" \
  -F 'options={"list_ids":[88]}'

{
  "error": true,
  "code": "validation_error",
  "message": "Email is required",
  "validation_errors": {
    "email": ["can't be blank"]
  }
}

https://api.nitrosend.com/openapi.yaml