All of our email lists come with a 97% deliverability guarantee.* Why not 100%? The reason for this is that in the world today, people are constantly changing jobs and/or positions, and companies may move and change their telephone numbers, names, websites, or email addresses. In order to keep up with a world that changes rapidly, we update our database daily using thousands of sources, but because contact info can change so much and so quickly, it is impossible to reach 100% deliverability in this industry. Our aim is to provide you with the most up-to-date data.