I guess you're worried about coming across aggressive because it could put them off. In my experience, you can phrase that "assertively" - something like: > Hi

I guess you're worried about coming across aggressive because it could put them off. In my experience, you can phrase that "assertively" - something like: > Hi, I imagine you either haven't seen my email or haven't been able to reply for some reason yet. I'm really keen to follow up our initial chats because I liked my interview and the company, so I've been nervous about sending this email in case it comes over as aggressive or impatient. However, I am in a position where I could lose other opportunities if I don't give them an answer, and I don't want to lose those if I'm no longer a candidate for the position here. If I don't hear back from you by Thursday night, I'll have to assume that you're not interested in continuing on this occasion. I'm available on email and mobile, and I would really appreciate a follow up so I know what to do next.