There’s a better way to address your e-mails that will help to minimize the spam people receive as a result of their e-mail address being exposed to a lot of people, like in the mailings you send out. What you do is you put all of your recipients’ e-mail addresses in the “BCC” (blind carbon copy) field so that no one will ever see them, then you put your own e-mail address in the “To” field (because you can’t leave it blank or you won’t be able to send the e-mail). 

Some may feel that sharing all of their addressees with each other will be safe because none of them will use the list of addresses in a bad way. But malware can mine addresses from the recipient listed in the e-mail in our inboxes. So if any one of your recipients' computers have this kind of malware on it, then all of the addresses will be known. Or one of your recipients may forward your message to someone else that you don't know.

Or better yet, if you use a service like Mail Chimp, Vertical Response, or Constant Contact to send out a periodic e-mail newsletter, you can use their e-mail broadcast function to send out a one-time e-mail blast to an e-mail list without exposing anyone's e-mail address to the rest of the list. In my opinion, Mail Chimp is the best choice, and it's free for the most common needs.