Left file: appwork-v1_3_1/laravel-starter/config/mail.php  
Right file: appwork-v1_4_0/laravel-starter/config/mail.php  

<?php	=	<?php
return [		return [
/*		/*
|--------------------------------------------------------------------------		|--------------------------------------------------------------------------
| Mail Driver		| Mail Driver
|--------------------------------------------------------------------------		|--------------------------------------------------------------------------
|		|
| Laravel supports both SMTP and PHP's "mail" function as drivers for the		| Laravel supports both SMTP and PHP's "mail" function as drivers for the
| sending of e-mail. You may specify which one you're using throughout		| sending of e-mail. You may specify which one you're using throughout
| your application here. By default, Laravel is setup for SMTP mail.		| your application here. By default, Laravel is setup for SMTP mail.
|		|
| Supported: "smtp", "sendmail", "mailgun", "mandrill", "ses",	<>	| Supported: "smtp", "sendmail", "mailgun", "ses",
|            "sparkpost", "postmark", "log", "array"		|            "postmark", "log", "array"
|	=	|
*/		*/
'driver' => env('MAIL_DRIVER', 'smtp'),		'driver' => env('MAIL_DRIVER', 'smtp'),
/*		/*
|--------------------------------------------------------------------------		|--------------------------------------------------------------------------
| SMTP Host Address		| SMTP Host Address
|--------------------------------------------------------------------------		|--------------------------------------------------------------------------
|		|
| Here you may provide the host address of the SMTP server used by your		| Here you may provide the host address of the SMTP server used by your
| applications. A default option is provided that is compatible with		| applications. A default option is provided that is compatible with
| the Mailgun mail service which will provide reliable deliveries.		| the Mailgun mail service which will provide reliable deliveries.
|		|
*/		*/
'host' => env('MAIL_HOST', 'smtp.mailgun.org'),		'host' => env('MAIL_HOST', 'smtp.mailgun.org'),
/*		/*
|--------------------------------------------------------------------------		|--------------------------------------------------------------------------
| SMTP Host Port		| SMTP Host Port
|--------------------------------------------------------------------------		|--------------------------------------------------------------------------
|		|
| This is the SMTP port used by your application to deliver e-mails to		| This is the SMTP port used by your application to deliver e-mails to
| users of the application. Like the host we have set this value to		| users of the application. Like the host we have set this value to
| stay compatible with the Mailgun e-mail application by default.		| stay compatible with the Mailgun e-mail application by default.
|		|
*/		*/
'port' => env('MAIL_PORT', 587),		'port' => env('MAIL_PORT', 587),
/*		/*
|--------------------------------------------------------------------------		|--------------------------------------------------------------------------
| Global "From" Address		| Global "From" Address
|--------------------------------------------------------------------------		|--------------------------------------------------------------------------
|		|
| You may wish for all e-mails sent by your application to be sent from		| You may wish for all e-mails sent by your application to be sent from
| the same address. Here, you may specify a name and address that is		| the same address. Here, you may specify a name and address that is
| used globally for all e-mails that are sent by your application.		| used globally for all e-mails that are sent by your application.
|		|
*/		*/
'from' => [		'from' => [
'address' => env('MAIL_FROM_ADDRESS', 'hello@example.com'),		'address' => env('MAIL_FROM_ADDRESS', 'hello@example.com'),
'name' => env('MAIL_FROM_NAME', 'Example'),		'name' => env('MAIL_FROM_NAME', 'Example'),
],		],
/*		/*
|--------------------------------------------------------------------------		|--------------------------------------------------------------------------
| E-Mail Encryption Protocol		| E-Mail Encryption Protocol
|--------------------------------------------------------------------------		|--------------------------------------------------------------------------
|		|
| Here you may specify the encryption protocol that should be used when		| Here you may specify the encryption protocol that should be used when
| the application send e-mail messages. A sensible default using the		| the application send e-mail messages. A sensible default using the
| transport layer security protocol should provide great security.		| transport layer security protocol should provide great security.
|		|
*/		*/
'encryption' => env('MAIL_ENCRYPTION', 'tls'),		'encryption' => env('MAIL_ENCRYPTION', 'tls'),
/*		/*
|--------------------------------------------------------------------------		|--------------------------------------------------------------------------
| SMTP Server Username		| SMTP Server Username
|--------------------------------------------------------------------------		|--------------------------------------------------------------------------
|		|
| If your SMTP server requires a username for authentication, you should		| If your SMTP server requires a username for authentication, you should
| set it here. This will get used to authenticate with your server on		| set it here. This will get used to authenticate with your server on
| connection. You may also set the "password" value below this one.		| connection. You may also set the "password" value below this one.
|		|
*/		*/
'username' => env('MAIL_USERNAME'),		'username' => env('MAIL_USERNAME'),
'password' => env('MAIL_PASSWORD'),		'password' => env('MAIL_PASSWORD'),
/*		/*
|--------------------------------------------------------------------------		|--------------------------------------------------------------------------
| Sendmail System Path		| Sendmail System Path
|--------------------------------------------------------------------------		|--------------------------------------------------------------------------
|		|
| When using the "sendmail" driver to send e-mails, we will need to know		| When using the "sendmail" driver to send e-mails, we will need to know
| the path to where Sendmail lives on this server. A default path has		| the path to where Sendmail lives on this server. A default path has
| been provided here, which will work well on most of your systems.		| been provided here, which will work well on most of your systems.
|		|
*/		*/
'sendmail' => '/usr/sbin/sendmail -bs',		'sendmail' => '/usr/sbin/sendmail -bs',
/*		/*
|--------------------------------------------------------------------------		|--------------------------------------------------------------------------
| Markdown Mail Settings		| Markdown Mail Settings
|--------------------------------------------------------------------------		|--------------------------------------------------------------------------
|		|
| If you are using Markdown based email rendering, you may configure your		| If you are using Markdown based email rendering, you may configure your
| theme and component paths here, allowing you to customize the design		| theme and component paths here, allowing you to customize the design
| of the emails. Or, you may simply stick with the Laravel defaults!		| of the emails. Or, you may simply stick with the Laravel defaults!
|		|
*/		*/
'markdown' => [		'markdown' => [
'theme' => 'default',		'theme' => 'default',
'paths' => [		'paths' => [
resource_path('views/vendor/mail'),		resource_path('views/vendor/mail'),
],		],
],		],
/*		/*
|--------------------------------------------------------------------------		|--------------------------------------------------------------------------
| Log Channel		| Log Channel
|--------------------------------------------------------------------------		|--------------------------------------------------------------------------
|		|
| If you are using the "log" driver, you may specify the logging channel		| If you are using the "log" driver, you may specify the logging channel
| if you prefer to keep mail messages separate from other log entries		| if you prefer to keep mail messages separate from other log entries
| for simpler reading. Otherwise, the default channel will be used.		| for simpler reading. Otherwise, the default channel will be used.
|		|
*/		*/
'log_channel' => env('MAIL_LOG_CHANNEL'),		'log_channel' => env('MAIL_LOG_CHANNEL'),
];		];