By Marcel Becker, Sr Director Product Management A key mission of Yahoo is to deliver messages that consumers want to receive and filter out the messages they don’t. To guide and help senders support us in that mission, we have documented our sending best practices on our Sender Hub. In addition, our postmaster teams have assisted the sending community to achieve the best results for them and ultimately for our users. Yet, numerous bulk senders fail to secure and set up their systems corr...