(PHP Extension) Send Email with Multiple Reply-To Addresses

Send email with multiple repy-to addresses.

Note: Some mail servers will remove the extra email addresses from the Reply-To header. Even if you provide multiple reply-to addresses, the email may arrive with only the 1st.

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux, Solaris

<?php

include("chilkat_9_5_0.php");
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

$mailman = new CkMailMan();

$mailman->put_SmtpHost('smtp.my_mail_server.com');
$mailman->put_SmtpUsername('myUsername');
$mailman->put_SmtpPassword('myPassword');
$mailman->put_SmtpPort(465);
$mailman->put_SmtpSsl(true);

// Create a new email object
$email = new CkEmail();

$email->put_Subject('This is a test');
$email->put_Body('This is a test');
$email->put_From('Joe <joe@example.com>');
$success = $email->AddTo('Mary','mary@example2.com');

// Specify a single reply-to address, which will get replace with a list of addresses..
$email->put_ReplyTo('placeholder@example.com');

// Get the email as MIME.
$sbMime = new CkStringBuilder();
$mailman->RenderToMimeSb($email,$sbMime);

// Update the Reply-To MIME header with a list of email addresses.
$replyToAddrs = 'joe@example.com, mike@example.com';
$sbMime->ReplaceAllBetween('Reply-To: ','\r\n',$replyToAddrs,false);

// Examine the MIME to be sent:
print $sbMime->getAsString() . "\n";

// Here's the MIME:

// MIME-Version: 1.0
// Date: Tue, 03 Sep 2024 08:18:12 -0500
// Message-ID: <D892B0E563A7A13B1F499530DE21529714EA479A@SLICE>
// Content-Type: text/plain; charset=us-ascii; format=flowed
// Content-Transfer-Encoding: 7bit
// X-Priority: 3 (Normal)
// Subject: This is a test
// From: Joe <joe@example.com>
// To: Mary <mary@example2.com>
// Reply-To: joe@example.com, mike@example.com
// 
// This is a test

// ---------
// Send the MIME...
$success = $mailman->SendMime('joe@example.com','mary@example2.com',$sbMime->getAsString());
if ($success == false) {
    print $mailman->lastErrorText() . "\n";
    exit;
}

$success = $mailman->CloseSmtpConnection();
if ($success == false) {
    print 'Connection to SMTP server not closed cleanly.' . "\n";
}

print 'Mail Sent!' . "\n";

?>