1)   WorldCast 3.1.48.254
WorldCast is a free two-in-one tool: A free bulk email software and also an e-mail address validator. It detects many of the common invalid addresses that exists on almost any emailing list, reporting bad email addresses, time-out operations, etc.
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 2)   GroupMail :: Free Edition 5.0.0.818
Whether it be for announcing new products and services to your customers, delivering and managing newsletters, or simply staying in touch with family and friends - GroupMail :: Free Edition will make the process effortless.
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