Import Using composer

1. Get the Following KEYS c)GoogleAuth - SecretKey - ClientID -ClientURI => https://console.cloud.google.com/

2. Run the Following Commands Via Composer (Install PHP composer if you dont have via https://getcomposer.org/download/ )

composer require google/apiclient

composer search phpdotenv   
composer require vlucas/phpdotenv

composer search guzzle
composer require guzzlehttp/guzzle

#PHP MAILER

composer require phpMailer/phpMailer