The Consent Campaign We just finished a consent campaign for a client, subscribing existing players for weekly email campaigns. The data in this screenshot tells a very specific story about list hygiene and ISP behavior. Here are the top 3 takeaways from these results: 1. Yahoo and AOL Hard Bounces We did email validation before the campaign. The problem is that Yahoo doesn't "tell the truth" to validation services; it only replies to real emails. Notice the hard bounce rates