**Question:** If you are contacting a person with whom you are not familiar and their email address is their first name only - for example *john@doe.com*, is it disrespectful to address them by their first name in an initial email to them?

Perhaps as a counterquestion, would addressing them such as *Mr. Doe* seem a bit cold and unfriendly? Or not including a salutation at all, as suggested in [a related question](https://workplace.stackexchange.com/questions/11079/how-should-i-address-an-email-application-if-i-dont-have-the-last-name-of-the-r)?