Thank you for reaching out to the Community! While email is not currently a channel of support, support is available by phone, chat, Twitter and Facebook, as well as here in the Community. I also would like to apologize your contacts are bouncing. Here is an article we have to help understand your bounces and how to fix them. If these contacts are correct a member of support can help look into them further. However if there are more than 5 contacts you are working with, I would suggest speaking to our Deliverability Department directly. This team can be reached at the hours and numbers listed here.