/home/pay/bserver/app/Mail/ Current File: //home/pay/bserver/app/Mail/YourMailableClass.php
<?php

namespace App\Mail;

use Illuminate\Bus\Queueable;
use Illuminate\Mail\Mailable;
use Illuminate\Queue\SerializesModels;

class YourMailableClass extends Mailable
{
    use Queueable, SerializesModels;

    public $transactionId;
    public $transactionDate;
    public $quantity;
    public $price;
    public $totalAmount;

    /**
     * Create a new message instance.
     *
     * @return void
     */
    public function __construct($transactionId, $transactionDate, $quantity, $price, $totalAmount)
    {
        $this->transactionId = $transactionId;
        $this->transactionDate = $transactionDate;
        $this->quantity = $quantity;
        $this->price = $price;
        $this->totalAmount = $totalAmount;
    }

    /**
     * Build the message.
     *
     * @return $this
     */
    public function build()
    {
        return $this->view('emails.transaction_notification')
            ->with([
                'transactionId' => $this->transactionId,
                'transactionDate' => $this->transactionDate,
                'quantity' => $this->quantity,
                'price' => $this->price,
                'totalAmount' => $this->totalAmount,
            ]);
    }
}