您可以在$headers数组内部设置回复地址。它需要有电子邮件地址内的<>，我会建议使用一个名称，以确保一切正常工作。
$headers[] = 'Reply-To: Firstname Lastname <your@mail.com>';个
我为你的电子邮件添加了主题。所以你的代码看起来像：

$recipient  = "recipient@example.com";
$subject = "Your subject";
$message = "Here is the sent message";
$headers = array(
    'Content-Type: text/html; charset=UTF-8',
    'From: MyWebsite <mywebsite@example.com>',
    'Reply-To: Firstname Lastname <your@mail.com>'
);

wp_mail( $recipient, $subject, $message, $headers );

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下面是一个完整的例子，包括标题和附件。

$from_name = 'name';
$from = 'from@example.test';
$subject = 'test';    
$body = 'Test';
$to = 'test@example.test';
$bcc = 'bccemail@example.text';
$attachments[] = WP_CONTENT_DIR.'/uploads/'.$path_to_file;
$headers[] = 'Content-Type: text/html; charset=UTF-8';
$headers[] = 'From: '.$from_name.' <'.$from.'>';
$headers[] = 'Reply-To: '.$from_name.' <'.$from.'>';
//add BCC if want 
$headers[] = 'Bcc: '.$bcc;

$success = wp_mail($to, $subject, $body, $headers, $attachments);

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