Equinux (www.equinux.com) has announced Mail Designer Pro 2.1, an update of the Mac OS X software that lets you create HTML-mails and newsletters with an optimized layout for mobile devices.

Version 2.1 sports mobile-optimized Team and Business designs designed to make it easy to send emails, memos, notes, links, invites and more using incredible mobile-reponsive designs. There are also bug fixes and minor tweaks.

Mail Designer Pro is available for 50% off (US$49.99) for a limited time. It requires Mac OS X 10.7 or higher.