Hey Allen,
Though not specific to the plugin, there are still some great questions here, and I’m happy to answer them!
The WordPress plugin only allows you to connect to a single MailChimp list at a time, so you won’t be able to generate multiple forms connected to different lists using this plugin. However, you do have a few other options.
One option would be to utilize MailChimp’s embed code, which it provides for each list in your account. By making a few edits to your code you can even send the “group” selections in the background of your form code. This effectively will allow you to place a different version of the embed code on each of your pages, then silently send their group data in the background subscription process. This will make sure each landing page points to a different group and would require no further action from the subscriber themselves.
More information about how to code that additional functionality can be found here:
Can I set up my signup form so that I can see where my recipients signed up?: https://eepurl.com/SKbn
While it doesn’t address the scenario exactly, the same concept can be used to pass that group data along in the background of your code. You’ll just need to predefine that value in your embed code.
Another option, as you mentioned would be to create a single list with multiple groups in MailChimp. Then select that list with the WordPress plugin. Your readers would then manually select which groups they’d like to be a part of and subscribe that way.
I want to make sure I cover each of your questions, so I’ll address them now:
1) While you can’t do it with the plugin, you can do it by editing the embed code using the concept in that KB article above to create different iterations of your form code.
2) Hmm, this question might need a bit more clarification. Subscribers can subscribe to multiple groups in a single list, yes. Additionally, if you have multiple lists in your account, they can be subscribed to multiple lists as well.
3) Yes! This series of messages that send after someone signs up to a list or group is called an autoresponder and it’s a feature that comes along with our paid plans. Take a look at the feature page on those here: https://mailchimp.com/features/autoresponders/
If you have anymore questions, let us know!