This is a fully functioning low maintanence product that just needs someone with an affinity to digital marketing to let it grow. Email Gardener is in the category of Email Lookup services like Hunter.io . You have a first name, last name and a domain name the website returns the most likely email address of this person based on pattern matching from emails of that company which were openly availiable on the web. The compeditive advantage of garnder.gg is what we have the largest coverage of any service becuase if we do not find an email in our db then we will query the top competing services until one is found which has the email in question. Our email DB itself is currently 4298932 in size. If you want to take this over as a very low maintanence project I would suggest you spin down all the email crawling worker nodes and just use it has an api aggregator. This is all build with Django backend, postgres db, Stripe payments and VueJS frontend.
I am selling because I have long moved on from this proejct and it is just waiting for someone to do some digital marketing to grow the inbound funnel. I build this project to learn marketing, product design and managment. Put about $10k into building it for backend developers, design and frontend devs. I still have the developers on staff on another project, you could also take them over if so desired.