E is the most comon letter in the english alphabet! 11% of all words is just the letter E, according to an analysis of more than 240,000 entries in the Concise Oxford English Dictionary. Z is the least used word according to a study of Cornell University of 40000 words.

The french letter I is pronounced like the english letter E, as the french letter E is pronounced like N.

The letter E being the most common letter is why the english keybord is NOT in alphabetical order.