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Instantiation

$paubox = new Paubox\Paubox();
Credentials are read automatically from the .env file (see Authentication). No constructor arguments are needed.

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Building a message

A message is assembled from three objects — Header, Content, and Message — plus optional Attachment objects. 
$header = new Paubox\Mail\Header();
$header->setSubject("Your results are ready");   // required
$header->setFrom("sender@yourdomain.com");        // required
$header->setReplyTo("support@yourdomain.com");    // optional

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Content

$content = new Paubox\Mail\Content();
$content->setPlainText("Plain text body.");                       // at least one required
$content->setHtmlText("<p>HTML body.</p>");                       // optional; auto base64-encoded by SDK

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Message

$message = new Paubox\Mail\Message();
$message->setHeader($header);                                     // required
$message->setContent($content);                                   // required
$message->setRecipients(["alice@example.com"]);                   // required
$message->setCc(["manager@example.com"]);                         // optional
$message->setBcc(["audit@example.com"]);                          // optional
$message->setAttachments([$attachment]);                          // optional; see below
$message->setAllowNonTLS(false);                                  // optional; default false
$message->setForceSecureNotification("true");                     // optional

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Attachments

$attachment = new Paubox\Mail\Attachment();
$attachment->setFileName("report.pdf");
$attachment->setContentType("application/pdf");
$attachment->setContent(base64_encode(file_get_contents("/path/to/report.pdf")));

$message->setAttachments([$attachment]);

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Send a message

$response = $paubox->sendMessage($message);
The response is a stdClass object:
PropertyDescription
sourceTrackingIdTracking ID for checking delivery status
dataRaw response data
errorsArray of error strings, if any
echo $response->sourceTrackingId;

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Check delivery status

$disposition = $paubox->getEmailDisposition($sourceTrackingId);
$disposition->data->message->message_deliveries is an array of per-recipient objects: 
foreach ($disposition->data->message->message_deliveries as $delivery) {
    echo $delivery->recipient . " → " . $delivery->status->deliveryStatus . PHP_EOL;
}
Common deliveryStatus values: delivered, opened, failed, pending.

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Error handling

Both sendMessage and getEmailDisposition throw \Exception on failure. Wrap calls in a try/catch block: 
try {
    $response = $paubox->sendMessage($message);
    echo "Sent. Tracking ID: " . $response->sourceTrackingId . PHP_EOL;
} catch (\Exception $e) {
    echo "Error: " . $e->getMessage() . PHP_EOL;
}
sendMessage throws if the Header or Content is null, or if the API response cannot be parsed. getEmailDisposition throws if the response cannot be parsed.