MassMail is a free utility that can send out mailings to multiple addresses at a time. Very useful for newsletters, etc. and you don't need to use a 3rd party. Warning: By using this software you agree not to send SPAM mail.

• Contacts Clinic for Microsoft Outlook 3.0
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  Update Microsoft Outlook Contacts Automatically without manual typing,and in 3 steps

• G-Lock EasyMail Professional 4.70
  Marketeers and ECRM experts agree that personalized messages get better response rates than "mass-produced" messages. EasyMail Pro makes this easy, creating unique message content and subject lines via its powerful mail-merge function. EasyMail...