feature allows you to split a mailing list file into several smaller mailing list
Click the Tools menu, and then click Split.
In the Mailing List Utility window, click Browse button to locate
the mailing list file you would like to split.
Enter the number of
email addresses per file, and the Base Name of the output file
Start to begin split process
Mail Communicator will generate output mailing list
files using Base Name provided followed by an increasing number. By
default the output file Base Name is "spliter", as a result Mail
Communicator will generate the following files: "spliter1.txt", "spliter2.txt",
"spliter3.txt" ... and so forth. Nevertheless you may use a different Base
Name if you wish.