This would allow users to enter an email without repeatedly changing the keyboard format. The leading capitalised character is particularly annoying and difficult to change on a small screen. An email like "name.surname@gmail.com" requires re-selecting the field to delete the leading capital letter, change the keyboard to lowercase and reenter the character, plus keyboard change for the "@" symbol, plus keyboard change for the remaining lower case letters. Even more changes if there are numbers in the email address.