MediaFunnel - MediaFunnel supports multiple users on one or more Twitter Accounts or Facebook Pages.
Awesome Mails - Awesome Mails creates beautiful image map emails, featuring an easy to use drag-and-drop editor...
Mandrill - Mandrill is a new way for apps to send transactional email. It runs on the delivery infrastructure that powers MailChimp.
Flexmail Solution - Professional email marketing with powerful and easy-to-use features
SocialReplay - SocialReplay: Daily snapshot of your social media accounts. For Professionals - From $5/month
Kingmailer - Kingmailer helps you send, receive and route/forward emails.