Inbox placement that works
99%+ deliverability through direct ISP partnerships, dedicated IPs, and advanced authentication (SPF, DKIM, DMARC).
Business Partner | 
Send transactional emails and marketing campaigns with 99%+ deliverability. Direct ISP relationships, dedicated IPs, and enterprise infrastructure - integrated in 15 minutes.
99%+ deliverability through direct ISP partnerships, dedicated IPs, and advanced authentication (SPF, DKIM, DMARC).
Combine email with SMS, WhatsApp, and Voice. One integration, one dashboard, one support team.
From thousands to millions daily. Real-time tracking, detailed analytics, webhook notifications included.
Integration in minutes
SDKs in 8+ languages, comprehensive documentation, and copy-paste code samples. Start sending in 15 minutes.
Build and send emails your way
Template management with dynamic personalization
Scheduled sending and batch processing
HTML/plain text formatting
List management and segmentation
Track performance in real-time
Real-time delivery status tracking
Open and click tracking
Bounce classification and suppression lists
Detailed analytics and reporting
Protection and compliance built-in
End-to-end encryption
SPF, DKIM, DMARC authentication
Dedicated IP addresses
ISO 27001 and PCI DSS certified
Integrate fast, code less
RESTful API with comprehensive docs
SDKs in Python, PHP, Java, Node.js
Webhook notifications
Sandbox environment for testing
0%
Inbox placement rate
< 0 sec
Average delivery time
0%
Platform uptime
0 min
Average integration time
Send order confirmations, password resets, and account notifications with sub-second delivery.
Launch segmented campaigns with template management, scheduled sending, and A/B testing.
Automate welcome sequences, verification emails, and educational drip campaigns.
Deliver security alerts, payment confirmations, and system notifications that arrive instantly.
RESTful API:
Simple HTTP/JSON integration with any development stack.
SMTP Relay:
Drop-in replacement with minimal configuration.
Native SDKs:
Pre-built libraries in 8+ languages for faster development.
Visual Workflow Builder:
No-code email sequences combined with SMS, WhatsApp, and chatbots.
const options = {
method: 'POST',
headers: {accept: 'application/json', 'content-type': 'application/json'},
body: JSON.stringify({senderName: 'Cequens', messageType: 'text', shortURL: false})
};
fetch('https://apis.cequens.com/sms/v1/messages', options)
.then(response => response.json())
.then(response => console.log(response))
.catch(err => console.error(err));
require 'uri'
require 'net/http'
url = URI("https://apis.cequens.com/sms/v1/messages")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["accept"] = 'application/json'
request["content-type"] = 'application/json'
request.body = "{\"senderName\":\"Cequens\",\"messageType\":\"text\",\"shortURL\":false}"
response = http.request(request)
puts response.read_body
request('POST', 'https://apis.cequens.com/sms/v1/messages', [
'body' => '{"senderName":"Cequens","messageType":"text","shortURL":false}',
'headers' => [
'accept' => 'application/json',
'content-type' => 'application/json',
],
]);
echo $response->getBody();
import requests
url = "https://apis.cequens.com/sms/v1/messages"
payload = {
"senderName": "Cequens",
"messageType": "text",
"shortURL": False
}
headers = {
"accept": "application/json",
"content-type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)
using RestSharp;
var options = new RestClientOptions("https://apis.cequens.com/sms/v1/messages");
var client = new RestClient(options);
var request = new RestRequest("");
request.AddHeader("accept", "application/json");
request.AddJsonBody("{\"senderName\":\"Cequens\",\"messageType\":\"text\",\"shortURL\":false}", false);
var response = await client.PostAsync(request);
Console.WriteLine("{0}", response.Content);
OkHttpClient client = new OkHttpClient();
MediaType mediaType = MediaType.parse("application/json");
RequestBody body = RequestBody.create(mediaType, "{\"senderName\":\"Cequens\",\"messageType\":\"text\",\"shortURL\":false}");
Request request = new Request.Builder()
.url("https://apis.cequens.com/sms/v1/messages")
.post(body)
.addHeader("accept", "application/json")
.addHeader("content-type", "application/json")
.build();
Response response = client.newCall(request).execute();
package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://apis.cequens.com/sms/v1/messages"
payload := strings.NewReader("{\"senderName\":\"Cequens\",\"messageType\":\"text\",\"shortURL\":false}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("accept", "application/json")
req.Header.Add("content-type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}
Why manage multiple vendors? Combine Email, SMS, WhatsApp, Voice, and AI chatbots through one integration.
Single integration for email, SMS, WhatsApp, Voice, and chatbots. Track every interaction across all channels in one unified dashboard.
24/7 technical support across your entire communication stack. No vendor finger-pointing - just fast, knowledgeable assistance.
Consolidated billing with volume discounts across all channels. Simpler procurement, clearer budgeting, better pricing.
“ We are tech-based startup in the food industry, and are always looking for partnerships that can provide us with the needed agility, dependability, and quality of service that helps us grow in an extremely competitive and demanding market. Working with CEQUENS has been super fulfilling and rewarding for us.”
Muhammed Sayed
Marketing Manager
“ As a communication-driven team in Decathlon, our mission is to spread our message to communities. By utilizing CEQUENS's SMS API solutions, we were able to connect with existing customers and onboard new customers rapidly and efficiently, inviting them to be part of the Decathlon experience with one click.”
Carole Nady
Head - Digital Marketing
“ Through CEQUENS’s solutions we were able to engage with our customers across their channel of preference, providing them with a convenient and reliable suite of solutions to deal with queries, pricing, delivery, and complaints. We look forward to working on more marketing strategies with their solutions.”
Ayman Shamout
CEO
Discover FAQs for SMS API: Get answers on services, features, pricing, and more. Our FAQ section clarifies common queries. For extra help, contact our support team.
Yes. Real-time open tracking, click tracking, and detailed analytics are included with all plans.