How do you manage your clients?
Hi, community!
I have a small online business and my number of clients continue to grow, so I want to manage them. I want to know what products I've sold to each client, what a problem I had with client, some other data...
So I wander how other people manage their clients. Maybe there are some programs that you use, or something else?
P.S. Excel is not the answer that I'm looking for ...
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