All the evidence points to this being a highly intense, deliberate and planned attack intended to gain access to Campaign Monitor data and to send spam emails. We are committed to stopping this ever being able to happen again, and again apologize for the major let down.

Promotional emails fall into the "drive 'em to the Web site" category because most sales are closed on the Web. But email newsletters can be of more than one kind -- ranging from snippets of copy with links leading back to the Web site right up to full articles in the email itself. So, which should you choose? Here are some guidelines.