ldc-wenn-dann-mit-respekt/app/Http/Controllers/ContactController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Mail;

class ContactController extends Controller
{
    /**
     * Show contact page
     *
     * @return \Illuminate\Contracts\View\View
     */
    public function contactForm()
    {
        return view('pages.kontakt');
    }

    /**
     * Submit contact form
     *
     * @param Request $request
     * @return \Illuminate\Http\RedirectResponse
     */
    public function sendContactForm(Request $request)
    {
        $request->validate(
            [
                'vorname' => 'required',
                'nachname' => 'required',
                'email' => 'required|email',
                'nachricht' => 'required',
                'datenschutz' => 'required',
            ]
        );

        $mailDatas = [
            'vorname' => $request->vorname,
            'nachname' => $request->nachname,
            'email' => $request->email,
            'nachricht' => $request->nachricht,
        ];

        Mail::send('contactMail', $mailDatas, function ($message) {
            $message->from('info@wenndannmitrespekt.de', 'Kontaktformular wenndannmitrespekt.de');
            $message->to('kontakt@wenndannmitrespekt.de', 'kontakt@wenndannmitrespekt.de')
            ->subject('Kontaktformular wenndannmitrespekt.de');
        });

        return redirect()->back()->with(['success' => 'Vielen Dank für Ihre Nachricht.']);
    }
}