I got a strong recommendation from my former supervisor. He wants to recommend me to one of his former colleagues who happens to have no position now. So I have to wait until the Spring Quarter. But I want to stay in contact with him because everything could happen during this period from now to next March.
Basically, in that university, the professors have the absolute power. If I can get permission from him, I can secure this position. And I really value this opportunity as he is like among the top 5 in our field.
How should I do? I have no idea what should be in the email which could increase my admission chance and would not bother him. I guess he must be busy every day.