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CallSumo helps businesses that depend on customer phone calls get and retain more customers. We easily identify opportunities for improvement in marketing and customer interactions by pairing the best of Machine Learning with Human Insights. Business and marketing interactions can be complex. CallSumo simplifies the optimization by notifying the right participant at the right time such as using an Enhanced Caller ID to notify the receptionist, SMS based alerts when things go wrong and pdf based reports periodically for the marketer and manager to make better informed tweaks to Marketing and sales for better business outcomes. Founded by former NASA engineers, CallSumo takes pride itself in providing technologies that are highly reliable and cutting edge. CallSumo has been rapidly expanding into new industries with offices in San Jose, CA and Melbourne, FL

Call Sumo Questions

The Call Sumo annual revenue was $3 million in 2026.

Call Sumo is based in San Jose, California.

The NAICS codes for Call Sumo are [51791, 5179, 51, 517].

The SIC codes for Call Sumo are [737, 73].

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