Access to the first form is established using a link which is inserted into the mailing. It is advisable to include links at the end of each mailing which subscribers can click to change their profile and to unsubscribe. Such a link is made up as follows:
http://rdir.de/form.do?agnCI=88&agnFN=formName&agnUID=##AGNUID##
The first part of the link, http://rdir.de/form.do, calls up the form.do processing script from the OpenEMM server. It is followed by several parameters separated by question marks:
• | agnCI: This parameter sets the Company ID value, in this case 88. Your company ID is always 1. |
• | agnFN: This parameter sets which form OpenEMM should display. In our examples above, you have defined a form called ShowProfile which is used in the example. |
• | agnUID: In order to identify a subscriber, OpenEMM creates a user ID for that user. In our example, it is the ##AGNUID## variable. This ID is created automatically for each user by OpenEMM when sending out a mailing. This means that each user can only call up one profile, namely the one with his or her personal subscriber data. |
Fig. 8.8: The link for changing a user profile looks like this.
After sending out the mailing, each subscriber receives an individual link where the user ID is part of the URL. The figure above shows the link like it is displayed in a recipient’s text mail. The mail client formats the link as a clickable link automatically. If you send mails in HTML format, this URL can be hidden behind a normal text link without the user seeing the long sequence of characters.