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Yii framework in form signup and send email / How to use the swiftMailer in Yii2

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Add blow code in this file and configar email and password
yii-application\common\config\main-local.php

'mailer' => [
'class' => 'yii\swiftmailer\Mailer',
'viewPath' => '@common/mail',
'useFileTransport' => false,//set this property to false to send mails to real email addresses
//comment the following array to send mail using php's mail function
'transport' => [
'class' => 'Swift_SmtpTransport',
'host' => 'smtp.gmail.com',
'username' => 'xyz@gmail.com',   // add email
'password' => 'xyz@123', // add password
'port' => '587',
'encryption' => 'tls',
],
],

Add email in blow file
yii-application\common\config\params.php

return [
    'adminEmail' => 'admin@example.com',
    'supportEmail' => 'abc@gmail.com',         // Add this new email
    'senderEmail' => 'noreply@example.com',
    'senderName' => 'Example.com mailer',
    'user.passwordResetTokenExpire' => 3600,
];