Optimizing Your Hotel Database: Quantity Vs Quality - Image Credit Unsplash+Poor database hygiene is a root cause. Letting go of guest email addresses from your database is going to happen. Keeping guests engaged:Knowing when it’s time to say goodbye is something hotels need to learn to do in email marketing. But there are also things you can do to mitigate the need to suppress some of your hard-won guest email addresses. But there are also things you can do to mitigate the need to suppress some of your hard-won guest email addresses.