[TASK] Doctrine: Migrate MailUtility

Resolves: #77307
Releases: master
Change-Id: I65492ac5d6b1ebed4f52196f1b709ee8d0ca0507
Reviewed-on: https://review.typo3.org/49266


Tested-by: Bamboo TYPO3com <info@typo3.com>
Reviewed-by: Mathias Schreiber <mathias.schreiber@wmdb.de>
Tested-by: Mathias Schreiber <mathias.schreiber@wmdb.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>