snipe-it/app/Mail/SendUpcomingAuditMail.php

<?php

namespace App\Mail;

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

class SendUpcomingAuditMail extends Mailable
{
    use Queueable, SerializesModels;

    /**
     * Create a new message instance.
     */
    public function __construct($params, $threshold)
    {
        $this->assets = $params;
        $this->threshold = $threshold;
    }

    /**
     * Get the message envelope.
     */
    public function envelope(): Envelope
    {
        $from = new Address(config('mail.from.address'), config('mail.from.name'));

        return new Envelope(
            from: $from,
            subject: trans_choice('mail.upcoming-audits', $this->assets->count(), ['count' => $this->assets->count(), 'threshold' => $this->threshold]),
        );
    }

    /**
     * Get the message content definition.
     */
    public function content(): Content
    {


        return new Content(

            markdown: 'notifications.markdown.upcoming-audits',
            with:  [
                'assets'  => $this->assets,
                'threshold'  => $this->threshold,
            ],
        );
    }

    /**
     * Get the attachments for the message.
     *
     * @return array<int, \Illuminate\Mail\Mailables\Attachment>
     */
    public function attachments(): array
    {
        return [];
    }
}