To embed a Interspire Email Marketer form inside an ASP.Net application, you cannot just copy the form code and have it work.
You will need to do the following:
1. Get the "action" from the form tag (for example http://www.domain.com/iem/form.php?form=X).
2. Remove the form tags around the Interspire Email Marketer form.
3. Find the submit button (for example <input type="submit" value="Subscribe">).
4. Change the submit button to an onclick event like:
<input type="submit" value="Subscribe" onClick="this.form.action='form_action'; this.form.submit();">
Where form_action is the url you got from step 1.
and your Interspire Email Marketer subscribe form will now work in your ASP.Net application.

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