Effective Email Strategy for Engaging CMOs at Marketing Events

We did something similar to the above that worked well recently. Basically just found CMOs that were likely to be attending a big marketing event. The email just said "Hey {{First Name}}, are you heading to {{Event Name}} this year? So far it's led to 8 confirmed coffee meetings with very high profile CMOs at the event. I think the brevity of the email made people assume they must know the sender from a previous year's event.