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Added Mailchimp Email Adapter #148

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deepshekhardas wants to merge 6 commits into from
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Added Mailchimp Email Adapter #148

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dbfd2a9
Added Mailchimp adapter for transactional emails
AVDiv Oct 8, 2023
315ad22
Adjust env variables and docker-compose setup
AVDiv Oct 8, 2023
e5763b7
Added testing unit for mailchimp adapter
AVDiv Oct 8, 2023
53d26ef
Test File: Object to Array Typecasting Error fixed
AVDiv Nov 1, 2023
7b736a0
Update tests/e2e/Email/MailchimpTest.php
AVDiv Nov 21, 2023
bcf0581
fix(Mailchimp): move to correct directory and update to current conve…
Jul 25, 2026
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78 changes: 78 additions & 0 deletions src/Utopia/Messaging/Adapter/Email/Mailchimp.php
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Original file line number Diff line number Diff line change
@@ -0,0 +1,78 @@
<?php

namespace Utopia\Messaging\Adapter\Email;

use Utopia\Messaging\Adapter\Email as EmailAdapter;
use Utopia\Messaging\Messages\Email as EmailMessage;
use Utopia\Messaging\Response;

class Mailchimp extends EmailAdapter
{
protected const NAME = 'Mailchimp';

public function __construct(
private readonly string $apiKey,
) {
parent::__construct();
}

public function getName(): string
{
return static::NAME;
}

public function getMaxMessagesPerRequest(): int
{
return 1000;
}

protected function process(EmailMessage $message): array
{
$response = new Response($this->getType());

$result = $this->request(
method: 'POST',
url: 'https://mandrillapp.com/api/1.0/messages/send',
headers: [
'Content-Type: application/json',
],
body: [
'key' => $this->apiKey,
'message' => [
'html' => $message->isHtml() ? $message->getContent() : null,
'text' => $message->isHtml() ? null : $message->getContent(),
'subject' => $message->getSubject(),
'from_email' => $message->getFromEmail(),
'from_name' => $message->getFromName(),
'to' => array_map(
fn(array $to) => ['email' => $to['email'], 'name' => $to['name'] ?? ''],
$message->getTo()
),
],
Comment on lines +41 to +51

@greptile-apps greptile-apps Bot Jul 25, 2026

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P1 Email fields are silently dropped

When an EmailMessage contains CC or BCC recipients, a distinct reply-to address, or attachments, this payload never reads or sends those fields, causing copy recipients to receive nothing, replies to target the sender, and delivered messages to omit their attachments.

Prompt To Fix With AI 
This is a comment left during a code review.
Path: src/Utopia/Messaging/Adapter/Email/Mailchimp.php
Line: 41-51

Comment:
**Email fields are silently dropped**

When an `EmailMessage` contains CC or BCC recipients, a distinct reply-to address, or attachments, this payload never reads or sends those fields, causing copy recipients to receive nothing, replies to target the sender, and delivered messages to omit their attachments.

How can I resolve this? If you propose a fix, please make it concise.

Fix in Claude Code Fix in Codex

],
);

$statusCode = $result['statusCode'];
$responseBody = $result['response'];

if ($statusCode >= 200 && $statusCode < 300) {
$response->setDeliveredTo(\count($message->getTo()));
foreach ($message->getTo() as $to) {
$response->addResult($to['email']);
}
Comment on lines +58 to +62

@greptile-apps greptile-apps Bot Jul 25, 2026

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P1 Recipient failures reported as delivered

When Mandrill returns HTTP 200 with a recipient marked rejected or invalid, this branch ignores the per-recipient response and records every address as successful, causing deliveredTo and recipient results to report undelivered messages as delivered. HTTP 5xx responses also bypass both branches and return no recipient errors.

Prompt To Fix With AI 
This is a comment left during a code review.
Path: src/Utopia/Messaging/Adapter/Email/Mailchimp.php
Line: 58-62

Comment:
**Recipient failures reported as delivered**

When Mandrill returns HTTP 200 with a recipient marked `rejected` or `invalid`, this branch ignores the per-recipient response and records every address as successful, causing `deliveredTo` and recipient results to report undelivered messages as delivered. HTTP 5xx responses also bypass both branches and return no recipient errors.

How can I resolve this? If you propose a fix, please make it concise.

Fix in Claude Code Fix in Codex

} elseif ($statusCode >= 400 && $statusCode < 500) {
$error = '';
if (\is_array($responseBody) && isset($responseBody['message'])) {
$error = $responseBody['message'];
} elseif (\is_string($responseBody)) {
$error = $responseBody;
}

foreach ($message->getTo() as $to) {
$response->addResult($to['email'], $error ?: 'Unknown error');
}
}

return $response->toArray();
}
}