Recommend an Adobe Product for Client Approval Process?

We create social posts with Adobe Spark but we really need a way to send these to our clients for electronic approval.  We've been exporting them and emailing which is - well, time consuming and not professional looking. Does anyone have any suggestions on a better way to do this? What are you using for client approval processes?  We've looked at social management tools that offer this process but haven't found one that is decent yet.  Open to any advice!