My try:
I wouldn't use "in case" and "skip".
I sent you this email twice but you didn't reply.If you have ignored/ignored this email intentionally, then it's okay.
Your guess is right Philip.Turkish say the same thing too. "İyi madem, tamam o zaman."
Philip wrote:Yankee's suggestion is very good. I don't know why you would say it is 'okay' if he ignored your first email, especially since you are bringing it up again. [Perhaps you are forgiving the person for the oversight?]