Create a Mixpanel webhook to any event and get notified in slack. Replace with your own token. Was built as part of https://findthat.email marketing automation.

Post Mixpanel events to Slack

<?php

$event = json_decode($_POST, true)

public static function slack($message, $channel)
{
    $ch = curl_init("https://slack.com/api/chat.postMessage");
    $data = http_build_query([
        "token" => "xoxp-20602861126-50564294628-131570927717-71f35607470b529281bb4cb779318048",
        "general" => $channel,
        "New Purchase! "+$event['$properties']['$email']+" subscribed to the "+$event['$properties']['$price']+" plan" => $message,
        "username" => "PaymentNotifier",
    ]);

    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST');
    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    $result = curl_exec($ch);
    curl_close($ch);
    return $result;
}

?>

👍