I sometimes wonder whether my prof is dyslexic looking at the emails she rattles off. However, I think it's more a case of when she's rattling off an email her fingers work faster than her brain (and she can't touch-type) so I see random letter swapping, random capitalisation, punctuation gaps. If the email needs to be more formal it'll be re-read, but not a "iLndsy can yuo pirnt this Thanks".