English-German translation for "mail"

Here's a guide to sending messages in Google Mail:

Mr President, the right to receive and send mail is an essential civil right in any civilized state.

Mr President, colleagues, I wanted to send you an e-mail about this, but unfortunately I cannot send e-mails at the moment.

There are programmes available through which companies can harvest names from the Web and send out vast amounts of e-mail to companies.

In the world of networking, the mail service is the most democratic of all networks.

This means that you won't have to wait for a check to arrive in the mail.

I received in my mail this morning some interesting figures showing world energy demand.

I have also received junk mail, even in a language I do not understand.