.. include:: /Includes.rst.txt .. index:: Events; AfterMailerInitializationEvent .. _AfterMailerInitializationEvent: ============================== AfterMailerInitializationEvent ============================== The PSR-14 event :php:`\TYPO3\CMS\Core\Mail\Event\AfterMailerInitializationEvent` is fired once a new :ref:`mailer ` is instantiated with specific transport settings. So it is possible to add custom mailing settings. Example ======= Registration of the event listener in the extension's :file:`Services.yaml`: .. literalinclude:: _AfterMailerInitializationEvent/_Services.yaml :language: yaml :caption: EXT:my_extension/Configuration/Services.yaml Read :ref:`how to configure dependency injection in extensions `. An example listener, which hooks into the Mailer API to modify mailer settings to not send any emails ("null mailer"), could look like this: .. literalinclude:: _AfterMailerInitializationEvent/_MyEventListener.php :language: php :caption: EXT:my_extension/Classes/Mail/EventListener/MyEventListener.php API === .. include:: /CodeSnippets/Events/Core/AfterMailerInitializationEvent.rst.txt