More than 20% of Business Email is Not Delivered

From B2B: More than 20% of commercial, permission-based e-mails are failing to reach the inboxes of intended subscribers. 17.4% of business email isn't delivered at all, with no hard bounce message or other notification of non-delivery.

That's why it's important to use a multi-touch, multi-media communications (email and direct mail) to reach your audience.