Am not actively maintaining this package but I will happily help anyone who needs it.
Campaign Monitor workflow for Umbraco Forms
A custom workflow to allow users to map Umbraco Forms to a Campaign Monitor list.
Configuration:
App settings:
API Key and Client key can be found by login into your Campaign Monitor account and then going to:
Version 1.1.0
Added tooltips to the settings to aid the user.
Version 1.0.0
Tested against
Umbraco 7.6.6
Umbraco Forms 6.0.2