Do you think men and women write in a different style to each other? If you look at an e-mail (not knowing who it is from), can you tell if it is from a man or a woman?

I think word's expression isn't so different between men and women. For example, this is an e-mail from my man friend. "Hisashiburinikaerutoiine." On the other hand, this is an e-mail from woman friend. "Ohisashiburi~(the first 'o' is the small letter in hiragana)" Thus, it isn't so different style in only the expession. However, women friends use many pitographic characters or face marks, but men friends don't use many them compared with woman's friend. In addition, women like to use small letters such as "sounandaa(the last 'a' is the small letter)", but men doesn't like to use them. Therefore if they use expressions such as this, I may know if it is from a man or a woman.