I've searched all over Google with no luck. Can someone point me in the right direction for learning how to send out batch emails with the wp_mail() function?
While according to
There is no explicit bcc (blind copy) argument from quick look at source it does seems to be processed if passed in headers.
Note that many hosting providers are very nervous about mass outgoing emails and can react... poorly. :) It's better to check in advance how many and how often emails you are allowed to send.