There are a couple of paid components that integrate Joomla with Constant Contact.
I'm hoping find or generate code to use for the newsletter sign-up in Joomla website.
Thanks for any direction. I'd like to add custom fields and have subscribers sign up to multiple lists and/or all lists on constant contact.
While it is possible to create a form that will collect the information that you want for Constant Contact, there is not currently a way to generate a code so that form can be embedded in your Joomla page. At this time, the only reliable method I was able to find that would solve your problem is likely to be one of the paid components that is available.
We definitely recognize that this is a limitation in our contact management platform, and we are working internally on planning a better solution than we currently have for signup forms.
If you have any additional questions or any concerns, please let us know!