Recently, valid email addresses have been fraudulently added to many open email lists, flooding inboxes with spam and resulting in a blockage of IP addresses. Barry Levine on August 26, 2016 Here’s a new worry that digital marketers can add to their growing list: A recent spate of email list bombings has led international spam … Continue reading Marketers, make sure you are not being list-bombed and blocked by Spamhaus