How to send email to a person without others knowing

When you send an email to multiple people, those people can see who else got that email. But if you don't want certain email addresses to be visible to others, this is how you do it in Outlook 2010 in secrecy.

In Outlook 2010, create a New E-mail.

You have a To... field, and Cc... field. In To... field you enter the contacts of people the emails is directly intended for. In the Cc... field you usually enter the contacts of people you want only to inform. All the people, either in To... or Cc... field will be able to see each other's contact information when the email arrives.

That's why we need the third field, so called Bcc...

In the New message window, click Options and click Bcc.

From Wikipedia: Bcc (Blind Carbon copy) refers to the practice of sending a message to multiple recipients in a way that conceals the fact that there may be additional addresses from the complete list of recipients. This concept originally applied to paper correspondence and now also applies to email.

And here's your Bcc field for all the secret people you want to inform without other's know about it.

To explain from my example: batman@batcave.com and james.gordon@gotham-pd.gov will be able to see that emails was sent to both of them, but they won't see that email was also sent to bane@gmail.com and 2face@gmail.com. The bane@gmail.com and 2face@gmail.com will only see that email was sent to Batman and Gordon but won't know about each other. Complicated? Not really. It's simple, all the people you put in Bcc won't be visible to others.