leezard/app/Mail/ReceipEmail.php

<?php

namespace App\Mail;

use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Mail\Mailable;
use Illuminate\Mail\Mailables\Content;
use Illuminate\Mail\Mailables\Envelope;
use Illuminate\Queue\SerializesModels;
use Illuminate\Mail\Mailables\Attachment;

class ReceipEmail extends Mailable
{
    use Queueable, SerializesModels;
    public $mailData;
    /**
     * Create a new message instance.
     *
     * @return void
     */
    public function __construct($mailData)
    {
        $this->mailData = $mailData;
    }

    /**
     * Get the message envelope.
     *
     * @return \Illuminate\Mail\Mailables\Envelope
     */
    public function envelope()
    {
        return new Envelope(
            subject: env('RECEIPT_MAIL_SUBJECT', 'Centro Sportivo La Madonnella - Ricevuta di pagamento ') . $this->mailData["number"],
        );
    }

    /**
     * Get the message content definition.
     *
     * @return \Illuminate\Mail\Mailables\Content
     */
    public function content()
    {
        return new Content(
            view: 'emails.receipt',
        );
    }

    /**
     * Get the attachments for the message.
     *
     * @return array
     */
    public function attachments()
    {
        return [
            Attachment::fromStorage($this->mailData["pdf"]),
            //$this->mailData["pdf"]
        ];
    }
}