What are some potential pitfalls of using the mail() function in PHP for mass-mail optimization?

One potential pitfall of using the mail() function in PHP for mass-mail optimization is that it can be slow and inefficient when sending a large number of emails. To improve performance, you can utilize a third-party mailing service like Mailgun or SendGrid, which are specifically designed for sending mass emails and offer better deliverability rates. 

// Example using Mailgun API for sending mass emails
require 'vendor/autoload.php';

use Mailgun\Mailgun;

$mg = Mailgun::create('YOUR_MAILGUN_API_KEY');

$domain = 'YOUR_MAILGUN_DOMAIN';

$mg->messages()->send($domain, [
    'from'    => 'sender@example.com',
    'to'      => 'recipient@example.com',
    'subject' => 'Hello',
    'text'    => 'Testing some Mailgun awesomness!'
]);

Keywords

mail function mass-mailing optimization SMTP spam folder

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