v2board/app/Jobs/SendEmail.php

<?php

namespace App\Jobs;

use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Queue\SerializesModels;
use Illuminate\Support\Facades\Mail;

class SendEmail implements ShouldQueue
{
    use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;
    protected $params;
    /**
     * Create a new job instance.
     *
     * @return void
     */
    public function __construct($params)
    {
        $this->params = $params;
    }

    /**
     * Execute the job.
     *
     * @return void
     */
    public function handle()
    {
        $params = $this->params;
        $email = $params['email'];
        $subject = $params['subject'];
        Mail::send(
            $params['template_name'], 
            $params['template_value'],
            function ($message) use($email, $subject) { 
                $message->to($email)->subject($subject); 
            }
        );
    }
}