(optional) The Activation code number, which defines the capabilities of your server. With no Serial Number, your Lyris List Manager is capable of running an unlimited number of
mailing lists, with up to 200 members in each mailing list. Other Activation codes offer different capabilities.
Once the limitations of your current serial number (or lack of one) are reached, no more members will be able to join your mailing lists.
When you purchase Lyris List Manager, you receive a serial number. You must then register your serial number, and the TCP/IP address of your Lyris List Manager, at the web page:
Once you have registered your serial number, you receive an activation code, which you put in the "activation code" box. This activates your copy of Lyris List Manager to the capabilities you
purchased. Note: The activation code will not work on another computer: it is locked to that TCP/IP address. If you need to run more than one Lyris List Manager in non-free mode, you will need to
purchase a serial number for each server you run.