header('content-type:text/html;charset=utf8');

$apiKey = "your api key";
$apiSecret = "your api secret";
$appId = "{{appId}}";
$timeStamp = time();
$sign = md5($apiKey . $apiSecret . $timeStamp);

$fromEmailAddress = urlencode("{{fromEmailAddress}}");
$toAddress = urlencode("{{toAddress}}");
$subject = urlencode("{{subject}}");
$templateID = "{{templateID}}";
$templateData = urlencode("{{templateData}}");
$adFlag = "{{adFlag}}";
$language = "{{language}}"; 
$checkEmailAddress = "{{checkEmailAddress}}";

$url = "https://api.itniotech.com/email/sendEmail?appId=$appId&fromEmailAddress=$fromEmailAddress&toAddress=$toAddress&subject=$subject&templateID=$templateID&templateData=$templateData&language=$language&adFlag=$adFlag&checkEmailAddress=$checkEmailAddress";

$curl = curl_init();
curl_setopt_array($curl, array(
    CURLOPT_URL => $url,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_TIMEOUT => 0,
    CURLOPT_SSL_VERIFYPEER => 0,
    CURLOPT_SSL_VERIFYHOST => 0,
    CURLOPT_CUSTOMREQUEST => 'GET',
    CURLOPT_HTTPHEADER => array(
        "Content-Type: application/json;charset=UTF-8",
        "Sign: $sign",
        "Timestamp: $timeStamp",
        "Api-Key: $apiKey"
    ),
));

$response = curl_exec($curl);
curl_close($curl);
echo $response;

curl --location --request GET 'https://api.itniotech.com/email/sendEmail'
--header 'Content-Type: application/json;charset=UTF-8'
--header 'Sign: {sign}'
--header 'Timestamp: {datetime}'
--header 'Api-Key: {apiKey}'
--data-raw '{"appId": "{{appId}}","fromEmailAddress": "{{fromEmailAddress}}","toAddress": "{{toAddress}}","subject": "{{subject}}","templateID": "{{templateID}}","templateData":"{{templateData}}","language": "{{language}}","adFlag": {{adFlag}},"checkEmailAddress": "{{checkEmailAddress}}"}'

import hashlib
import time
import requests
import json

base_url = "https://api.itniotech.com/email/sendEmail"
api_key = "your api key"
api_pwd = "your api secret"
app_id = "{{appId}}"

timestamp = int(time.time())
s = "%s%s%s" % (api_key, api_pwd, str(timestamp))
sign = hashlib.md5(s.encode(encoding='UTF-8')).hexdigest()

headers = {
    'Content-Type': 'application/json;charset=utf-8',
    'Sign': sign,
    'Timestamp': str(timestamp),
    'Api-Key': api_key
}

fromEmailAddress = "{{fromEmailAddress}}"
toAddress = "{{toAddress}}"
subject = "{{subject}}"
templateID = "{{templateID}}"
templateData = "{{templateData}}"
adFlag = "{{adFlag}}"
language = "{{language}}"
checkEmailAddress = "{{checkEmailAddress}}"

params = {"appId": app_id, "fromEmailAddress": fromEmailAddress, "toAddress": toAddress, "subject": subject, "templateID": templateID, "templateData": templateData, "language": language, "adFlag": adFlag, "checkEmailAddress": checkEmailAddress}
print(params)

rsp = requests.get(base_url, params, headers=headers)

if rsp.status_code == 200:
    data = json.loads(rsp.text)
    print(data)