I got an objection and question from a prospect today that I couldn't confidently deliver on "I am not convinced that the concept of a sequence actually works. I derive our statistics on emails and phone calls separately and they are kept in different silos when reporting on success. What unbiased statistics can you supply me with that demonstrates that a sequence, or string of emails/phone calls etc. are more effective that one off tasks?"
Anyone have resources they could help me out with?