Using E-Mail Adapters
If you would prefer not to use the Apex Mercury package to send e-mail, full interopability is supported. There are already built-in adapters for both phpMailer and Symfony Mailer although any e-mailing package can easily be made into an adapter.
To change the e-mail implementation, open the /boot/container.php file and look for the line:
EmailerInterface::class => \Apex\Mercury\Email\Emailer::class
Change this line to the location of any class that supports the EmailerInterface interface and everything will continue to work fine. There are two currently built-in e-mail adapters you can change this line to which are:
Once the line has been changed, all e-mail will be going through the new implementation.