Programmable email · PHP

Programmable email in PHP

Drive email entirely from PHP: send with one call, receive every inbound message as parsed JSON on a webhook, and give any app or AI agent its own inbox on a domain you control — with no mail server to run.

Start free Quickstart

Install

Add the PHP library:

install · PHP

composer require mailkite/mailkite

Send an email

One endpoint, one API key — over your own authenticated domain. Send API reference →

send · PHP

<?php
$mk = new \MailKite\Client(getenv('MAILKITE_API_KEY'));

$res = $mk->send([
    'from' => 'hello@myapp.ai',
    'to' => 'ada@example.com',
    'subject' => 'Your invoice #1042',
    'html' => '<p>Thanks! Receipt attached.</p>',
]);

Receive email as a webhook

Point your domain's MX at MailKite and every message arrives as parsed JSON — verify the signature, then handle it. No IMAP, no mail server.

receive · PHP

<?php
$mk = new \MailKite\Client(""); // no API key needed to verify
$secret = getenv("MAILKITE_WEBHOOK_SECRET");
$signature = $_SERVER["HTTP_X_MAILKITE_SIGNATURE"] ?? "";
$rawBody = file_get_contents("php://input");

if (!$mk->verifyWebhook($signature, $rawBody, $secret)) {
    http_response_code(401);
    exit;
}
$event = json_decode($rawBody, true);
// ...handle $event["type"] === "email.received"
header("content-type: application/json");
echo $mk->replyOk(); // {"status":"ok"}

Go deeper: Email to webhook: the complete guide, or give an AI agent its own inbox.

Everything programmable email does

Send, receive, and agent inboxes — the same shape in every language. See the full picture →

Unlimited domains ·Unlimited mailboxes ·3,000 emails/mo — 100 emails/day. Pricing →