You could have downloaded NetMessageX 1.0 for Mac from our software library for free. The actual developer of this software for Mac is Xspansion Business Solutions Ltd. NetMessageX for Mac lies within Business Tools, more precisely General.
From the developer:
NetMessageX... Save messages from your E-mail application to NetSuite. NetMessageX is scriptable, so you can save messages from any relevant application that supports AppleScript. NetMessageX is supplied with sample scripts for the Mail and Entourage applications, so you can get up-and-running quickly. Search NetSuite for the Contacts, Customers or both, and to store the message against their record.
You may want to check out more Mac applications, such as Dynadot Account Management Client, which might be related to NetMessageX.