Send HTML email
curl --request POST \
--url https://emails.platform.arb.inc/html/send \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"expires": "2025-08-15T10:30:00Z",
"from": {
"address": "support@arb.inc",
"name": "Arb Support"
},
"to": [
{
"address": "user@example.com",
"name": "John Doe"
}
],
"subject": "Important Notice - Action Required",
"html": "<html><body><h1>Welcome</h1><p>Thank you for signing up!</p></body></html>",
"idempotency_key": "notice-2025-08-00292",
"cc": [
{
"address": "cc@example.com",
"name": "Jane Smith"
}
],
"bcc": [
{
"address": "bcc@example.com",
"name": "Admin"
}
],
"replyTo": {
"name": "Support Team",
"address": "replyto@example.com"
},
"text": "Welcome! Thank you for signing up!"
}
'import requests
url = "https://emails.platform.arb.inc/html/send"
payload = {
"expires": "2025-08-15T10:30:00Z",
"from": {
"address": "support@arb.inc",
"name": "Arb Support"
},
"to": [
{
"address": "user@example.com",
"name": "John Doe"
}
],
"subject": "Important Notice - Action Required",
"html": "<html><body><h1>Welcome</h1><p>Thank you for signing up!</p></body></html>",
"idempotency_key": "notice-2025-08-00292",
"cc": [
{
"address": "cc@example.com",
"name": "Jane Smith"
}
],
"bcc": [
{
"address": "bcc@example.com",
"name": "Admin"
}
],
"replyTo": {
"name": "Support Team",
"address": "replyto@example.com"
},
"text": "Welcome! Thank you for signing up!"
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({
expires: '2025-08-15T10:30:00Z',
from: {address: 'support@arb.inc', name: 'Arb Support'},
to: [{address: 'user@example.com', name: 'John Doe'}],
subject: 'Important Notice - Action Required',
html: '<html><body><h1>Welcome</h1><p>Thank you for signing up!</p></body></html>',
idempotency_key: 'notice-2025-08-00292',
cc: [{address: 'cc@example.com', name: 'Jane Smith'}],
bcc: [{address: 'bcc@example.com', name: 'Admin'}],
replyTo: {name: 'Support Team', address: 'replyto@example.com'},
text: 'Welcome! Thank you for signing up!'
})
};
fetch('https://emails.platform.arb.inc/html/send', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://emails.platform.arb.inc/html/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 => json_encode([
'expires' => '2025-08-15T10:30:00Z',
'from' => [
'address' => 'support@arb.inc',
'name' => 'Arb Support'
],
'to' => [
[
'address' => 'user@example.com',
'name' => 'John Doe'
]
],
'subject' => 'Important Notice - Action Required',
'html' => '<html><body><h1>Welcome</h1><p>Thank you for signing up!</p></body></html>',
'idempotency_key' => 'notice-2025-08-00292',
'cc' => [
[
'address' => 'cc@example.com',
'name' => 'Jane Smith'
]
],
'bcc' => [
[
'address' => 'bcc@example.com',
'name' => 'Admin'
]
],
'replyTo' => [
'name' => 'Support Team',
'address' => 'replyto@example.com'
],
'text' => 'Welcome! Thank you for signing up!'
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://emails.platform.arb.inc/html/send"
payload := strings.NewReader("{\n \"expires\": \"2025-08-15T10:30:00Z\",\n \"from\": {\n \"address\": \"support@arb.inc\",\n \"name\": \"Arb Support\"\n },\n \"to\": [\n {\n \"address\": \"user@example.com\",\n \"name\": \"John Doe\"\n }\n ],\n \"subject\": \"Important Notice - Action Required\",\n \"html\": \"<html><body><h1>Welcome</h1><p>Thank you for signing up!</p></body></html>\",\n \"idempotency_key\": \"notice-2025-08-00292\",\n \"cc\": [\n {\n \"address\": \"cc@example.com\",\n \"name\": \"Jane Smith\"\n }\n ],\n \"bcc\": [\n {\n \"address\": \"bcc@example.com\",\n \"name\": \"Admin\"\n }\n ],\n \"replyTo\": {\n \"name\": \"Support Team\",\n \"address\": \"replyto@example.com\"\n },\n \"text\": \"Welcome! Thank you for signing up!\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
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))
}HttpResponse<String> response = Unirest.post("https://emails.platform.arb.inc/html/send")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"expires\": \"2025-08-15T10:30:00Z\",\n \"from\": {\n \"address\": \"support@arb.inc\",\n \"name\": \"Arb Support\"\n },\n \"to\": [\n {\n \"address\": \"user@example.com\",\n \"name\": \"John Doe\"\n }\n ],\n \"subject\": \"Important Notice - Action Required\",\n \"html\": \"<html><body><h1>Welcome</h1><p>Thank you for signing up!</p></body></html>\",\n \"idempotency_key\": \"notice-2025-08-00292\",\n \"cc\": [\n {\n \"address\": \"cc@example.com\",\n \"name\": \"Jane Smith\"\n }\n ],\n \"bcc\": [\n {\n \"address\": \"bcc@example.com\",\n \"name\": \"Admin\"\n }\n ],\n \"replyTo\": {\n \"name\": \"Support Team\",\n \"address\": \"replyto@example.com\"\n },\n \"text\": \"Welcome! Thank you for signing up!\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://emails.platform.arb.inc/html/send")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"expires\": \"2025-08-15T10:30:00Z\",\n \"from\": {\n \"address\": \"support@arb.inc\",\n \"name\": \"Arb Support\"\n },\n \"to\": [\n {\n \"address\": \"user@example.com\",\n \"name\": \"John Doe\"\n }\n ],\n \"subject\": \"Important Notice - Action Required\",\n \"html\": \"<html><body><h1>Welcome</h1><p>Thank you for signing up!</p></body></html>\",\n \"idempotency_key\": \"notice-2025-08-00292\",\n \"cc\": [\n {\n \"address\": \"cc@example.com\",\n \"name\": \"Jane Smith\"\n }\n ],\n \"bcc\": [\n {\n \"address\": \"bcc@example.com\",\n \"name\": \"Admin\"\n }\n ],\n \"replyTo\": {\n \"name\": \"Support Team\",\n \"address\": \"replyto@example.com\"\n },\n \"text\": \"Welcome! Thank you for signing up!\"\n}"
response = http.request(request)
puts response.read_body{
"message": "email queued for delivery"
}html
Send HTML email
Sends an email with raw HTML content and queues it for delivery. Accepts full HTML markup with optional plain text fallback. Requires emails.email.sender permission.
POST
/
html
/
send
Send HTML email
curl --request POST \
--url https://emails.platform.arb.inc/html/send \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"expires": "2025-08-15T10:30:00Z",
"from": {
"address": "support@arb.inc",
"name": "Arb Support"
},
"to": [
{
"address": "user@example.com",
"name": "John Doe"
}
],
"subject": "Important Notice - Action Required",
"html": "<html><body><h1>Welcome</h1><p>Thank you for signing up!</p></body></html>",
"idempotency_key": "notice-2025-08-00292",
"cc": [
{
"address": "cc@example.com",
"name": "Jane Smith"
}
],
"bcc": [
{
"address": "bcc@example.com",
"name": "Admin"
}
],
"replyTo": {
"name": "Support Team",
"address": "replyto@example.com"
},
"text": "Welcome! Thank you for signing up!"
}
'import requests
url = "https://emails.platform.arb.inc/html/send"
payload = {
"expires": "2025-08-15T10:30:00Z",
"from": {
"address": "support@arb.inc",
"name": "Arb Support"
},
"to": [
{
"address": "user@example.com",
"name": "John Doe"
}
],
"subject": "Important Notice - Action Required",
"html": "<html><body><h1>Welcome</h1><p>Thank you for signing up!</p></body></html>",
"idempotency_key": "notice-2025-08-00292",
"cc": [
{
"address": "cc@example.com",
"name": "Jane Smith"
}
],
"bcc": [
{
"address": "bcc@example.com",
"name": "Admin"
}
],
"replyTo": {
"name": "Support Team",
"address": "replyto@example.com"
},
"text": "Welcome! Thank you for signing up!"
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({
expires: '2025-08-15T10:30:00Z',
from: {address: 'support@arb.inc', name: 'Arb Support'},
to: [{address: 'user@example.com', name: 'John Doe'}],
subject: 'Important Notice - Action Required',
html: '<html><body><h1>Welcome</h1><p>Thank you for signing up!</p></body></html>',
idempotency_key: 'notice-2025-08-00292',
cc: [{address: 'cc@example.com', name: 'Jane Smith'}],
bcc: [{address: 'bcc@example.com', name: 'Admin'}],
replyTo: {name: 'Support Team', address: 'replyto@example.com'},
text: 'Welcome! Thank you for signing up!'
})
};
fetch('https://emails.platform.arb.inc/html/send', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://emails.platform.arb.inc/html/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 => json_encode([
'expires' => '2025-08-15T10:30:00Z',
'from' => [
'address' => 'support@arb.inc',
'name' => 'Arb Support'
],
'to' => [
[
'address' => 'user@example.com',
'name' => 'John Doe'
]
],
'subject' => 'Important Notice - Action Required',
'html' => '<html><body><h1>Welcome</h1><p>Thank you for signing up!</p></body></html>',
'idempotency_key' => 'notice-2025-08-00292',
'cc' => [
[
'address' => 'cc@example.com',
'name' => 'Jane Smith'
]
],
'bcc' => [
[
'address' => 'bcc@example.com',
'name' => 'Admin'
]
],
'replyTo' => [
'name' => 'Support Team',
'address' => 'replyto@example.com'
],
'text' => 'Welcome! Thank you for signing up!'
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://emails.platform.arb.inc/html/send"
payload := strings.NewReader("{\n \"expires\": \"2025-08-15T10:30:00Z\",\n \"from\": {\n \"address\": \"support@arb.inc\",\n \"name\": \"Arb Support\"\n },\n \"to\": [\n {\n \"address\": \"user@example.com\",\n \"name\": \"John Doe\"\n }\n ],\n \"subject\": \"Important Notice - Action Required\",\n \"html\": \"<html><body><h1>Welcome</h1><p>Thank you for signing up!</p></body></html>\",\n \"idempotency_key\": \"notice-2025-08-00292\",\n \"cc\": [\n {\n \"address\": \"cc@example.com\",\n \"name\": \"Jane Smith\"\n }\n ],\n \"bcc\": [\n {\n \"address\": \"bcc@example.com\",\n \"name\": \"Admin\"\n }\n ],\n \"replyTo\": {\n \"name\": \"Support Team\",\n \"address\": \"replyto@example.com\"\n },\n \"text\": \"Welcome! Thank you for signing up!\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
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))
}HttpResponse<String> response = Unirest.post("https://emails.platform.arb.inc/html/send")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"expires\": \"2025-08-15T10:30:00Z\",\n \"from\": {\n \"address\": \"support@arb.inc\",\n \"name\": \"Arb Support\"\n },\n \"to\": [\n {\n \"address\": \"user@example.com\",\n \"name\": \"John Doe\"\n }\n ],\n \"subject\": \"Important Notice - Action Required\",\n \"html\": \"<html><body><h1>Welcome</h1><p>Thank you for signing up!</p></body></html>\",\n \"idempotency_key\": \"notice-2025-08-00292\",\n \"cc\": [\n {\n \"address\": \"cc@example.com\",\n \"name\": \"Jane Smith\"\n }\n ],\n \"bcc\": [\n {\n \"address\": \"bcc@example.com\",\n \"name\": \"Admin\"\n }\n ],\n \"replyTo\": {\n \"name\": \"Support Team\",\n \"address\": \"replyto@example.com\"\n },\n \"text\": \"Welcome! Thank you for signing up!\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://emails.platform.arb.inc/html/send")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"expires\": \"2025-08-15T10:30:00Z\",\n \"from\": {\n \"address\": \"support@arb.inc\",\n \"name\": \"Arb Support\"\n },\n \"to\": [\n {\n \"address\": \"user@example.com\",\n \"name\": \"John Doe\"\n }\n ],\n \"subject\": \"Important Notice - Action Required\",\n \"html\": \"<html><body><h1>Welcome</h1><p>Thank you for signing up!</p></body></html>\",\n \"idempotency_key\": \"notice-2025-08-00292\",\n \"cc\": [\n {\n \"address\": \"cc@example.com\",\n \"name\": \"Jane Smith\"\n }\n ],\n \"bcc\": [\n {\n \"address\": \"bcc@example.com\",\n \"name\": \"Admin\"\n }\n ],\n \"replyTo\": {\n \"name\": \"Support Team\",\n \"address\": \"replyto@example.com\"\n },\n \"text\": \"Welcome! Thank you for signing up!\"\n}"
response = http.request(request)
puts response.read_body{
"message": "email queued for delivery"
}Authorizations
access token
Body
application/json
Expiration time for the email send request
Example:
"2025-08-15T10:30:00Z"
Show child attributes
Show child attributes
List of recipient email addresses
Minimum array length:
1Show child attributes
Show child attributes
Email subject line
Example:
"Important Notice - Action Required"
HTML content of the email
Example:
"<html><body><h1>Welcome</h1><p>Thank you for signing up!</p></body></html>"
Unique key to prevent duplicate email sends
Maximum string length:
100Example:
"notice-2025-08-00292"
Optional list of CC recipients
Show child attributes
Show child attributes
Optional list of BCC recipients
Show child attributes
Show child attributes
Optional reply-to email address
Show child attributes
Show child attributes
Optional plain text version of the email
Example:
"Welcome! Thank you for signing up!"
Response
200 - application/json
Email successfully queued for delivery
Example:
"email queued for delivery"
⌘I