Yours is the first time I've ever seen IMAP "spelled" iMap. In fact, I couldn't even connect the dots between the two until the second time you used it.
http://en.wikipedia.org/wiki/Internet_Message_Access_Protoco...
I would probably had seen IMAP thousands of times. iMap is the first time and has a very similar shape to iMac that is very known for me as I had several of those.
I don't really know why he starts with lowerCase, them Upper case in the middle, then lower again.
Is that the new maps in iOs?
Only after reading your message I connected the dots.