Launch Outlook and click the “New E-mail” button. Click the “To” button and, if necessary, choose an address book. From here, choose your blast recipients, which appear in alphabetical order. Press and hold down the “Ctrl” key, then click once on each person that you want to include in the group. If you’d rather do a blind blast -- where recipients can’t see each others' names -- add one name to the "To" field, then click the “Bcc” field and add the recipients here instead, then click the “OK.”
Julie Ewald recommends moving away from sending generic content to your whole email list via e-blast entirely. With a little elbow grease, you can utilize segmentation and start sending off tailored messages to each of your lists with content that’s relevant, valuable, and designed to resonate with the kind of recipients that make up each segment.