What is the potential risk of exceeding the maximum length of the BCC field in PHP emails?

Exceeding the maximum length of the BCC field in PHP emails can potentially lead to email delivery issues or errors. To solve this issue, you can split the BCC recipients into smaller batches and send multiple emails with different sets of BCC recipients. 

$recipients = array('recipient1@example.com', 'recipient2@example.com', 'recipient3@example.com', 'recipient4@example.com', 'recipient5@example.com');

$batchSize = 2; // Set the maximum number of recipients per email

for ($i = 0; $i < count($recipients); $i += $batchSize) {
    $bccRecipients = array_slice($recipients, $i, $batchSize);
    
    $headers = "Bcc: " . implode(',', $bccRecipients) . "\r\n";
    
    // Send email with BCC recipients in current batch
    mail('recipient@example.com', 'Subject', 'Message', $headers);
}

Keywords

PHP email BCC field maximum length risk

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