One of the long-lasting Internet products like email is email marketing, which can spread rapidly like a plague with high effectiveness, high speed and low cost. This makes it highly appreciated by numerous product/service salesmen around the world since the day of its birth. Because they firmly believe that -- among the countless emails sent every day, they can always receive response from some potential customers. If you need to send an email to a tremendous amount of customers at work, then a bulk/batch email sender will definitely save you too much time and effort.

Mailbird is a small, simple and user-friendly free desktop email client for Windows, written in WPF and C#. It focuses on speed and email productivity, was mainly inspired from the classic Sparrow on Mac OS, and is totally different from common email software like Thunderbird, Outlook or Windows Live Mail.