Here is an email: Hey Susan, long time no hear. I hope things are going well with you. I'm sure by now you're a star trader on the West desk. I've been in London for the past 5 months in enron Credit (Nick's group). I'm scheduled to return to Houston next month. I know I only call you when I need something, but I was wondering if I could ask you some questions about the market. Is it ok if I call you later today?
What is a potential subject line for this email?
what's up?