How do I manage all the invoices that I have sent? Ben Flores November 17, 2016 01:52 Updated Follow You can manage your invoices both from the Flint mobile app as well as the Flint merchant portal. Related articles How do I get my money? How is Flint Different? How do I identify a scam? How many invoice email reminders will my clients receive? I cannot transact... help! Comments 0 comments Article is closed for comments.