Tato bakalářská práce se bude zabývat výzkumem e-mailové korespondence. Důraz bude kladen na vztah mluvenosti a psanosti a přítomnosti jejich znaků v tomto druhu komunikace. Součástí práce bude teoretická část, která se bude věnovat pojmům mluvenost, psanost, oficiálnost a neoficiálnost. V praktické části se pak budu věnovat výzkumu korpusu e-mailů.. Cílem bude dokázat přítomnost znaků mluvené češtiny v psané e-mailové komunikaci.E-mail communication is one the most used way of the communications currently. It is because e-mail has a many greats qualities for users. For example it is free, fast and available for all. Therefore it is important that linguists examene this way of communications, because it is interesting source of current status of Czech. Very important person of this subject is Zdeňka Hladká, which examene letters, sms and e-mails and principal created a corpus of private correspondence. In my thesis I tried show, that in e-mail correspondence are typical elements for speaking czech. In the beginning is a sort part which describes theory of problem speaking and writing and describe definition of formality and informality. Next part is practical. I divide e-mails to two groups formals and informals e-mails and compare them. I want prove occurrence of elements typical for speaking Czech, because the aim is to highlight the fact that e-mail is type of communication on the border of speaking and writing.