Hi Courtney,    Thanks for the ideas! They are helpful.    For clients that have a "lite" account, I can't create another user to use as the developer access account. Do they have to create the app themselves with their account owner login in that case?   B ... View more

Hi John,    I'm in this same situation and was not able to make the Master Token work, as the app I'm integrating (Gravity Forms) only support the basic V3 API.   That leaves me with your first option, which is proving very complicated to implement. In order to create a user on each client (for me over 100) I would need to have individual email addresses in each client account, or as you say, have them create/approve the app themselves, which is also proving difficult for my clients. Is there a way for me to use the same email address in multiple client accounts?   Thanks in advance, Ben ... View more