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Model

Sender

Magento\Sales\Model\Order\Email\Sender

What it does

This abstract class serves as the base for sending order-related emails in Magento 2, such as order confirmations, invoices, and shipment notifications.

Developers extend this class to create specific email senders for different order events, leveraging its built-in functionality for template preparation, address formatting, and email delivery.

It handles both guest and registered customer emails, including optional copy-to functionality.