Why is Queued email important in Laravel applications, and what problem does it solve for developers?

Why is Queued email important in Laravel applications, and what problem does it solve for developers? The key reason to understand queued email is that Laravel applications are usually composed of several layers that must work together predictably. Slow or high-volume email delivery can be queued so it does not delay the originating HTTP request. Ignoring that boundary can lead to duplicated logic, poor security, unnecessary database work, or code that is difficult to test. Why it matters in practice: Laravel mail features provide a structured way to create and send application emails using configurable mail transports and templates. The specific focus here is queued email: Slow or high-volume email delivery can be queued so it does not delay the originating HTTP request. This question is designed to test not only terminology, but also how the concept fits into Laravel's request, application, database, security, or deployment workflow.