Let me preface by saying this is not my text, it's copied from someone else put I'll put some thoughts and tips in too.
A lot of people don't know how to use their Instagram accounts grown with follow/unfollow to make money. They mostly try CPA and it works to varying degrees. This particular method works better and more consistently, ESPECIALLY if you can automate it.
In the hidden content tab is the copied text, the rest are my thoughts:
This works like a charm if you do it well. I am currently looking into making an email scraper (based on keywords) + bulk sender, which would make me able to automate this process and get a lot more reach for nearly 0 minutes of time spent per day. Now also imagine having multiple accounts in different niches. Many, many potential customers there. I will make a report here once I'm done with all that and share my experiences and personal thoughts and methods but I'm sure it will work.
Enjoy and good luck making some money!