If you don't already have a mailing system in place, check out MailChimp (www.mailchimp.com) or SendGrid (www.sendgrid.com). MailChimp is great if you want a f

If you don't already have a mailing system in place, check out MailChimp (www.mailchimp.com) or SendGrid (www.sendgrid.com). MailChimp is great if you want a full WYSIWYG newsletter solution. SendGrid is great if you want to roll your own software to generate emails - they provide a ton of terrific SMTP-based add-ons that trick out your emails with analytics, click tracking, and best-practice stuff that's a pain to automate. I don't work for them - just love their service.