Use custom field to dynamically add users to lists

Hi there!

I’ve set up a Mailpoet list for one of our customers. They have several segments on their lists, depending on their users’s job profile and geographical location. (Picture “communication staff who works in Spain” or “socialworker from France”) To this end, we have created custom fields with selects and dropboxes that I was planning to use later to create the segments. It looked so logical to me that I didn’t even check if it was possible, and too late I realise that it isn’t. Or maybe I can’t find how to do it.

Is there a way around this? I mean: I see two paths, but I can’t seem to find how to make any of them work:
– Can I dynamically add users to lists upon signup depending on the answer to questions.
– Can I segment users later, upon sending an email based on their answers?

Thank you!