Unix is an open source operating system. It is a multiuser, multitasking OS that facilities the development of several applications in addition to their testing. Several top developers around the world prefer Unix its simplicity and usability. Additionally, Unix finds patronage among the casual coders’ and hobbyists’ community. The UNIX Users Email List from Infos B4B contains mailing details of Unix users worldwide. Furthermore, it has segmentations to categorize the users on the basis of their usage. Such a list helps marketers promote relevant software and applications to these users. These products are all compatible with Unix and would be promising to the users. Moreover, when advertisers Unix Users Mailing List, they buy a marketing platform.