Magento_Email module
Magento_Email module enables you to manage email templates.
This module adds the page to create/edit email template at the admin side and possibility add/update templates programmatically.
Installation details
The Magento_Email module is one of the base Magento 2 modules. You cannot disable or uninstall this module.
For information about a module installation in Magento 2, see Enable or disable modules.
Extensibility
Extension developers can interact with the Magento_Email module. For more information about the Magento extension mechanism, see Magento plugins.
The Magento dependency injection mechanism enables you to override the functionality of the Magento_Email module.
Layouts
The module introduces layout handles in the view/adminhtml/layout
directory.
For more information about a layout in Magento 2, see the Layout documentation.
UI components
You can extend product and category updates using the configuration files located in the view/adminhtml/ui_component
directory.
For information about a UI component in Magento 2, see Overview of UI components.
Additional information
For information about significant changes in patch releases, see 2.4.x Release information.
More information about email templates are at articles: