mivita/app/Mail/CustomerEmailChangeMail.php

<?php

namespace App\Mail;

use App\Models\ShoppingUser;
use App\Services\Util;
use Illuminate\Bus\Queueable;
use Illuminate\Mail\Mailable;
use Illuminate\Queue\SerializesModels;

class CustomerEmailChangeMail extends Mailable
{
    use Queueable, SerializesModels;

    public function __construct(public ShoppingUser $shoppingUser, public string $token) {}

    public function build(): self
    {
        $firstname = $this->shoppingUser->billing_firstname;
        $salutation = $firstname ? __('email.hello').' '.$firstname : __('email.hello');

        // Link zeigt immer auf das Kundenportal (in.mivita.care), unabhängig vom Versand-Kontext.
        $link = rtrim(Util::getMyMivitaPortalUrl(), '/').'/kunde/email-bestaetigen/'.$this->token;
        $subject = __('customer.email_change_mail_subject');

        return $this->subject($subject)
            ->view('emails.customer_email_change')
            ->with([
                'salutation' => $salutation,
                'link' => $link,
                'mailTitle' => $subject,
                'greetings' => __('email.greetings'),
                'sender' => __('email.sender'),
            ]);
    }
}