Our customer has a typo3 site [url removed, login to view] where they use the extension directmail to send newsletters.
1) There should be made an unsubscribe link at the bottom of all newsletters, so the receiver can instantly unsubscribe by clicking that link in the newsletter.
2) At the bottom of all calendar events, there should be a possiblity to download an .ics file containing the given event. That ics file should be compatible with outlook calendar, thunderbird calendar, google calendar and ical on Mac. See an example event here: [url removed, login to view]