My email was "compromised" today and batches of unknown data was emailed to hundreds of my contacts. I changed my password. How do I let all contacts know what happened?

Question

My email account was "compromised" today...Apple Support term but I call it a virus.  I changed my password but not before batches of messages were sent to my contact list.  I don't know the content but imagine it was junk type stuff.  Is there a way to inform my entire contact list of this error?

Answer 1

It's not a virus.
You can send a message to a group of your contacts, if you feel that's necessary, as follows.
Open a new message window and write the message. From the Mail menu bar, select
View > Bcc Address Field
if not already selected. Launch the Contacts (OS X 10.8) or Address Book (other versions) application. Drag the group(s) you want to send the message to into the Bcc field of the Mail window. Send.
Note that if you address too many destinations at once, your mail server may reject the mailing as spam.