What was claimed
Zenzap raised $44 million for an AI workplace messenger that, as the headline puts it, "aims to replace WhatsApp in the workplace". Its customer list includes FedEx, Starbucks, Taco Bell and other big names.
What is actually there
The piece has no user count, no activity data, no revenue and no valuation. What it does have is the size of the round, a team of about 50 and a customer list supplied by the company itself. Out loud that sounds serious, but the details show that individual IHOP and McDonald's branches use it to organize shifts and supplies. That looks little like a whole corporation switching over. There is also a free tier, and paid plans start at $51 a month for up to 20 users, so some of the users may bring in no money at all.
Why the headline is too bold
Raising money means investors believe in the plan, not that the plan worked. WhatsApp has billions of users, and people write there out of habit, not for lack of options. Changing a habit in retail and hospitality is hard. Note also that praise such as "Bessemer's own team uses it" comes from an interested party, the investor.
Bottom line
The round gives the company time and money to grow, but "replacing WhatsApp" is a goal, not a result. Until there are numbers on active users, there is nothing to judge.