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POST
/
emails
/
mime
Send a raw MIME email
curl --request POST \
  --url https://api.sendkit.dev/emails/mime \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "envelope_from": "Your Name <hello@yourdomain.com>",
  "envelope_to": "user@example.com",
  "raw_message": "<string>"
}
'
import requests

url = "https://api.sendkit.dev/emails/mime"

payload = {
"envelope_from": "Your Name <hello@yourdomain.com>",
"envelope_to": "user@example.com",
"raw_message": "<string>"
}
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({
envelope_from: 'Your Name <hello@yourdomain.com>',
envelope_to: 'user@example.com',
raw_message: '<string>'
})
};

fetch('https://api.sendkit.dev/emails/mime', 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://api.sendkit.dev/emails/mime",
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([
'envelope_from' => 'Your Name <hello@yourdomain.com>',
'envelope_to' => 'user@example.com',
'raw_message' => '<string>'
]),
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://api.sendkit.dev/emails/mime"

payload := strings.NewReader("{\n \"envelope_from\": \"Your Name <hello@yourdomain.com>\",\n \"envelope_to\": \"user@example.com\",\n \"raw_message\": \"<string>\"\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://api.sendkit.dev/emails/mime")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"envelope_from\": \"Your Name <hello@yourdomain.com>\",\n \"envelope_to\": \"user@example.com\",\n \"raw_message\": \"<string>\"\n}")
.asString();
require 'uri'
require 'net/http'

url = URI("https://api.sendkit.dev/emails/mime")

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 \"envelope_from\": \"Your Name <hello@yourdomain.com>\",\n \"envelope_to\": \"user@example.com\",\n \"raw_message\": \"<string>\"\n}"

response = http.request(request)
puts response.read_body
{
  "id": "550e8400-e29b-41d4-a716-446655440000"
}
{
"message": "Invalid API key."
}
{
"message": "The email field is required."
}
{
"name": "rate_limit_exceeded",
"message": "Rate limit exceeded. Please retry after 30 seconds."
}

Authorizations

Authorization
string
header
required

API key from your SendKit dashboard. Pass it as a Bearer token in the Authorization header.

Body

application/json
envelope_from
string
required

Sender email address. Must belong to a verified domain. Accepts plain email or with display name.

Example:

"Your Name <hello@yourdomain.com>"

envelope_to
string<email>
required

Recipient email address.

Example:

"user@example.com"

raw_message
string
required

The raw RFC 2822 formatted email message.

Required string length: 10 - 37500000

Response

Email accepted for delivery

Returned when sending to a single recipient.

id
string<uuid>

Unique identifier of the created email.

Example:

"550e8400-e29b-41d4-a716-446655440000"