Marketing email selling our Maintenance Package

An email to let our existing clients, first and foremost, know about the maintenance package we offer. It's a points system, which in return for advance purchase, they get a decent discount. The message is that if you're likely to require reactive maintenance for one or more of your properties, then this ought to be a win-win. The points don't expire either, so if they have a "good year" in terms of little going wrong, then they can be used the the following year.