Email API
2026-03-08 19:00 Diff
https://netcorecloud.com/email/email-api/enterprise-grade-security/

Lightning-Fast, AI-Powered Email API for
Scalable and Reliable Email Delivery

Trusted by 6500+ brands |
Recognized by

G2 Leader in Email API
(2025)

Featured in Gartner Voice
of Customer

Named in Forrester
Email Wave Report

Premium partner
Google Cloud

Meta
Partner

Built for Scale. Optimized for Engagement.
Backed by Expert Support.

Blazing-Fast, AI-Driven Email Delivery

Deliver 50 B+ emails monthly with <3s delivery and 95% inbox placement. Let Raman, our homegrown AI engine, optimize your delivery in real-time with Predictive Engagement, Adaptive Throughput and Send-Time Optimization

Advanced Analytics and Real-Time Monitoring

Track every mail stream in real-time with predictive alerts, inbox monitoring, and deep performance insights.

Beyond Delivery: AMP, BIMI, and Email Annotations

Create app-like email experiences, build brand trust, and drive up to 5x engagement - right inside the inbox.

Flexible, Developer-Friendly Integration

Plug and play in minutes with SMTP or RESTful API. Build, send, and scale with complete control and zero friction.

Ready to Build Smarter Emails?

Start sending intelligent, high-performing emails within minutes. Whether you're a marketer or a developer, our platform is made to scale with you.

Send at scale with the developer-first email platform

Deliver high-priority alerts with precision, speed, and scale. Netcore ensures industry-leading inbox placement and real-time delivery via Google Cloud-powered infrastructure.

Vietjet Air uses Netcore’s AMP emails and automation to send dynamic, real-time flight updates, offers, and notifications to millions of travelers.

40X

Increase in Email Revenue

Run high-performing campaigns using personalization, AI-led optimization, and interactive AMP content. From flash sales to festive offers, scale effortlessly.

Diamond Candles partners with Netcore to boost email deliverability and scale personalized campaigns using Inbox Commerce, Merchandise Triggers, and advanced automation.

31.2%

Increase in Engagement

Ensure your OTPs, 2FA, and password resets arrive instantly and securely. Netcore’s secure infrastructure and fallback queues ensure zero disruption.

99.99%

Delivery Uptime onGCP

Enterprise-Grade Infrastructure Backed by Google Cloud

Netcore Infrastructure

  • 01 Google Cloud Platform
  • 02 Global Edge Delivery
  • 03 99.99% Uptime SLA
  • 04 Real-time Failover

Built on industry-leading GCP infrastructure for high performance and scalability.

Netcore Integration

RESTful APIs

SMTP Relay

SDKs Available

Easy integration with minimal effort. Plug into your application seamlessly.

Netcore Security

ISO/IEC 27001:2013

SOC 2 Certified

GDPR Compliant

Enterprise-grade security with complete compliance coverage.

Connect with the Tools You Already Use

Netcore Email API fits right into your marketing and development stack. From CRM tools to
ecommerce platforms, integrations are plug-and-play.

Everything Marketer and Developer Needs — and More

import requests import json url = "https://emailapi.netcorecloud.net/v5/mail/send" payload = { "from": { "email": "[email protected]", "name": "Flight confirmation" }, "subject": "Your Barcelona flight e-ticket : BCN2118050657714", "content": [ { "type": "html", "value": "Hello Lionel, Your flight for Barcelona is confirmed." } ], "personalizations": [ { "to": [ { "email": "[email protected]", "name": "Lionel Messi" } ] } ] } headers = { "api_key": "", "Content-Type": "application/json" } response = requests.post(url, headers=headers, json=payload) print(response.status_code) print(response.text) curl --request POST \ --url https://emailapi.netcorecloud.net/v5/mail/send \ --header 'api_key: ' \ --header 'Content-Type: application/json' \ --data '{ "from": { "email": "[email protected]", "name": "Flight confirmation" }, "subject": "Your Barcelona flight e-ticket : BCN2118050657714", "content": [ { "type": "html", "value": "Hello Lionel, Your flight for Barcelona is confirmed." } ], "personalizations": [ { "to": [ { "email": "[email protected]", "name": "Lionel Messi" } ] } ] }' const https = require('https'); const data = JSON.stringify({ from: { email: '[email protected]', name: 'Flight confirmation' }, subject: 'Your Barcelona flight e-ticket : BCN2118050657714', content: [ { type: 'html', value: 'Hello Lionel, Your flight for Barcelona is confirmed.' } ], personalizations: [ { to: [ { email: '[email protected]', name: 'Lionel Messi' } ] } ] }); const options = { hostname: 'emailapi.netcorecloud.net', path: '/v5/mail/send', method: 'POST', headers: { 'api_key': '', 'Content-Type': 'application/json', 'Content-Length': data.length } }; const req = https.request(options, (res) => { let body = ''; res.on('data', (chunk) => { body += chunk; }); res.on('end', () => { console.log('Response:', body); }); }); req.on('error', (e) => { console.error('Request error:', e); }); req.write(data); req.end(); require 'uri' require 'net/http' require 'openssl' require 'json' url = URI("https://emailapi.netcorecloud.net/v5/mail/send") http = Net::HTTP.new(url.host, url.port) http.use_ssl = true request = Net::HTTP::Post.new(url) request["api_key"] = "" request["Content-Type"] = "application/json" payload = { from: { email: "[email protected]", name: "Flight confirmation" }, subject: "Your Barcelona flight e-ticket : BCN2118050657714", content: [ { type: "html", value: "Hello Lionel, Your flight for Barcelona is confirmed." } ], personalizations: [ { to: [ { email: "[email protected]", name: "Lionel Messi" } ] } ] } request.body = payload.to_json response = http.request(request) puts response.body package main import ( "bytes" "encoding/json" "fmt" "io" "net/http" ) func main() { url := "https://emailapi.netcorecloud.net/v5/mail/send" payload := map[string]interface{}{ "from": map[string]string{ "email": "[email protected]", "name": "Flight confirmation", }, "subject": "Your Barcelona flight e-ticket : BCN2118050657714", "content": []map[string]string{ { "type": "html", "value": "Hello Lionel, Your flight for Barcelona is confirmed.", }, }, "personalizations": []map[string][]map[string]string{ { "to": { { "email": "[email protected]", "name": "Lionel Messi", }, }, }, }, } jsonData, err := json.Marshal(payload) if err != nil { fmt.Println("Error marshaling JSON:", err) return } req, err := http.NewRequest("POST", url, bytes.NewBuffer(jsonData)) if err != nil { fmt.Println("Error creating request:", err) return } req.Header.Set("api_key", "") req.Header.Set("Content-Type", "application/json") client := &http.Client{} res, err := client.Do(req) if err != nil { fmt.Println("Error sending request:", err) return } defer res.Body.Close() body, err := io.ReadAll(res.Body) if err != nil { fmt.Println("Error reading response:", err) return } fmt.Println("Status:", res.Status) fmt.Println("Response:", string(body)) } <?php $curl = curl_init(); curl_setopt_array($curl, array( CURLOPT_URL => "https://emailapi.netcorecloud.net/v5/mail/send", CURLOPT_RETURNTRANSFER => true, CURLOPT_ENCODING => "", CURLOPT_MAXREDIRS => 10, CURLOPT_TIMEOUT => 30, CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1, CURLOPT_CUSTOMREQUEST => "POST", CURLOPT_POSTFIELDS => "{\"from\":{\"email\":\"[email protected]\",\"name\":\"Flight confirmation\"},\"subject\":\"Your Barcelona flight e-ticket : BCN2118050657714\",\"content\":[{\"type\":\"html\",\"value\":\"Hello Lionel, Your flight for Barcelona is confirmed.\"}],\"personalizations\":[{\"to\":[{\"email\":\"[email protected]\",\"name\":\"Lionel Messi\"}]}]}", CURLOPT_HTTPHEADER => array( "api_key: <Your API Key>", "content-type: application/json" ), )); $response = curl_exec($curl); $err = curl_error($curl); curl_close($curl); if ($err) { echo "cURL Error #:" . $err; } else { echo $response; } HttpResponse<String> response = Unirest.post("https://emailapi.netcorecloud.net/v5/mail/send") .header("api_key", "<Your API Key>") .header("content-type", "application/json") .body("{\"from\":{\"email\":\"[email protected]\",\"name\":\"Flight confirmation\"},\"subject\":\"Your Barcelona flight e-ticket : BCN2118050657714\",\"content\":[{\"type\":\"html\",\"value\":\"Hello Lionel, Your flight for Barcelona is confirmed.\"}],\"personalizations\":[{\"to\":[{\"email\":\"[email protected]\",\"name\":\"Lionel Messi\"}]}]}") .asString(); using RestSharp; var client = new RestClient("https://emailapi.netcorecloud.net/v5/mail/send"); var request = new RestRequest(Method.POST); request.AddHeader("api_key", ""); request.AddHeader("Content-Type", "application/json"); var payload = new { from = new { email = "[email protected]", name = "Flight confirmation" }, subject = "Your Barcelona flight e-ticket : BCN2118050657714", content = new[] { new { type = "html", value = "Hello Lionel, Your flight for Barcelona is confirmed." } }, personalizations = new[] { new { to = new[] { new { email = "[email protected]", name = "Lionel Messi" } } } } }; request.AddJsonBody(payload); IRestResponse response = client.Execute(request); // Output the response Console.WriteLine("Status Code: " + response.StatusCode); Console.WriteLine("Response: " + response.Content); wget --quiet \ --header="api_key: " \ --header="Content-Type: application/json" \ --post-data='{ "from": { "email": "[email protected]", "name": "Flight confirmation" }, "subject": "Your Barcelona flight e-ticket : BCN2118050657714", "content": [ { "type": "html", "value": "Hello Lionel, Your flight for Barcelona is confirmed." } ], "personalizations": [ { "to": [ { "email": "[email protected]", "name": "Lionel Messi" } ] } ] }' \ --output-document=- \ https://emailapi.netcorecloud.net/v5/mail/send var data = JSON.stringify({ "from": { "email": "[email protected]", "name": "Flight confirmation" }, "subject": "Your Barcelona flight e-ticket : BCN2118050657714", "content": [ { "type": "html", "value": "Hello Lionel, Your flight for Barcelona is confirmed." } ], "personalizations": [ { "to": [ { "email": "[email protected]", "name": "Lionel Messi" } ] } ] }); var xhr = new XMLHttpRequest(); xhr.withCredentials = true; xhr.addEventListener("readystatechange", function () { if (this.readyState === this.DONE) { console.log(this.responseText); } }); xhr.open("POST", "https://emailapi.netcorecloud.net/v5/mail/send"); xhr.setRequestHeader("api_key", ""); xhr.setRequestHeader("content-type", "application/json"); xhr.send(data);

Our customer's success writes our story

AJIO Achieves 42% Conversion Uplift and 4x Higher Engagement with Netcore’s Email Innovation

Read full case study

Axis Max Life Insurance Achieves 93% Call Pickup Rate & 90% Policy Issuance Success with Netcore’s AMP Email Innovation

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Cleartrip achieves a 410% increase in clicks with dynamic mailers powered by Netcore’s AMP for email

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Bigbasket leverages Netcore’s email marketing and AI engine to achieve a 159% uplift in engagement and reactivate 20% of dormant users

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ACT Fibernet achieves a whopping 7X uplift in CRP lead generation with Netcore’s AMP emails and AI-powered email marketing

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Sercanto increases its inbox placement rate to 90% and drives up revenue by 10% with the Netcore email API

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Truecaller’s email series, delivered through Netcore, witnessed 47% engagement and increased adoption of their improved iOS App

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UK's leading online dating platform HubPeople achieves a staggering 78% increase in email engagement

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How Netcore Helped Farmison & Co Drive 300% Growth in Conversion Through Smarter Email Marketing

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Spinning Success: O!Millionaire’s 8X Click Rate Boost with Netcore’s Personalized and Engaging Approach

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Polaris Bank increases clicks by 10% and decreases unsubscribes by 20% using Netcore’s AI-driven email marketing platform

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Netcore helps Gulf News streamline their newsletters to increase deliverability & conversion, as well as improve advertisers’ ROI

Read full case study

Netcore’s AI-powered emails help R&B Fashion grow their online presence to keep pace with the brand’s growth across 6 countries

Read full case study

APIs or Application Programming Interfaces are interfaces that help add new features to your existing applications without additional maintenance. You can add email-sending capabilities to your applications or websites with email-sending API. The emails can be triggered based on specific schedules or sent once an action on the web interface triggers an email.

Email API allows you to send emails to your recipients using your sending domain. You would need an API Key to authenticate your API requests. Each API request will enable you to send an email to single or multiple recipients.

There are two ways in which we can do the email integration with Netcore API:
● Netcore public Email API - It is an open API for public usage that can directly integrate into the user application.
● SDK - An SDK is a set of tools provided by the vendor for easy setup and working with an external API. Netcore provides SDKs for most of the popular programming languages, including PHP.
To use either integration, you need to have an API Key to authenticate your API requests. Each API call will enable you to send an email to a single or multiple recipients.

SMTP (Simple Mail Transfer Protocol) is a standard protocol for sending emails between servers, acting like a postal service for email. API (Application Programming Interface) for email is a more modern, flexible method that allows applications to directly interact with an email service provider to send, track, and manage emails with more features and automation.

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