In what scenarios is it advisable to separate the email processing functionality from the server sending the emails in PHP applications?

It is advisable to separate the email processing functionality from the server sending the emails in PHP applications when you want to improve code modularity and maintainability. By separating these concerns, you can easily switch between different email sending services or make changes to the email processing logic without affecting the server sending the emails. 

// Email processing functionality
class EmailProcessor {
    public function processEmail($to, $subject, $message) {
        // Process the email (e.g., validation, formatting)
        // Return the processed email data
    }
}

// Server sending emails
class EmailSender {
    public function sendEmail($to, $subject, $message) {
        $emailProcessor = new EmailProcessor();
        $processedEmail = $emailProcessor->processEmail($to, $subject, $message);
        
        // Send the email using a specific email sending service (e.g., SMTP, API)
    }
}

// Example of sending an email
$emailSender = new EmailSender();
$emailSender->sendEmail('recipient@example.com', 'Test Subject', 'Test Message');

Keywords

scalability microservices SMTP message queue asynchronous communication

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