@Case Wegner Thanks for the reply, the license is not too much of a problem I guess - because ultimately if there is a commercial conflict the n8n team seem to be asking you to contact them to provide more context, so hopefully they will play nice. I am still not clear on how I can proceed. Essentially I am buildnig a web-app where the user will login etc. Once authenticated I then want to allow them to invoke n8n workflows that utilise their credentials. If I manually set up a workflow at design time to use their credentials this will work fine, but I need this to be a data driven approach meaning user credentials are passed to n8n at runtime. Is that possible? For example - if I write an app that has the ability to monitor a user's inbox, how would I apply this to all users working for a company? If you have any ideas please let me know. Thanks