OB Mail Merge
OB Mail Merge 1.6 is available as a free download on our software library. This software is a product of OB Utilities. The program belongs to Communication Tools. The most popular versions of the software are 1.6 and 1.1.
From the developer:
OB Mail Merge add-in for Microsoft Outlook.
Send personalized messages to your friends, co-workers or site subscribers using the familiar interface of Microsoft® Outlook®. Configure a delay period between outgoing messages, thus insuring your mail server or ISP will not reject valid connections.
You may want to check out more software, such as Mail Merge Toolkit, Easy Mail Merge for Outlook or Mail Merge for Microsoft Access 2007, which might be related to OB Mail Merge.