Liviu Tanase does not take notes when he reads. There is no elaborate capture system waiting beside the book, no promise to turn every good paragraph into a task. A note, in his view, becomes something else to do. A founder with a growing company can generally obtain those without consulting a book.
Yet a passage in Max Bazerman’s Judgment in Managerial Decision Making stayed with him. It concerned escalation of commitment: the habit of giving a failing course of action more time, more money and more loyalty because you have already given it so much. Tanase recognized the trap. He began asking whether the thing he was pursuing still deserved to be pursued.
That is a useful question for someone who would eventually describe spending roughly $3 million learning how to market ZeroBounce. It also opens a window onto a less visible part of entrepreneurship. Starting a company requires conviction. Running one requires a way to tell when conviction has begun sending invoices to your judgment.
Four companies, then a new country
When Tanase moved from Romania to the United States in 2014, he had already founded four businesses in his home country. He arrived with experience in entrepreneurship and telecommunications, rather than a first idea awaiting its first test. America would provide a different setting for habits he had already spent years developing.
His interest in email validation grew from a business that depended on email to deliver important customer messages. The addresses accumulated, but their usefulness did not stay fixed. People changed jobs. Mailboxes disappeared. A database could retain the appearance of an asset while quietly becoming less dependable.
The attraction of the problem was practical. Companies worked to gather contacts, then relied on those contacts for invoices, account messages and marketing. An address that no longer worked could undermine all three. Somewhere between acquiring a customer and communicating with that customer, the machinery needed attention.
ZeroBounce’s early development dates to 2015; it became fully operational in 2017. The initial service validated email addresses and enhanced lists. In other words, Tanase’s fifth company would inspect something many businesses preferred to assume was fine. A mailing list is an agreeable possession until somebody asks whether its contents still exist.
The book that made quitting respectable
Tanase’s account of his reading offers a useful companion to that business history. Stephen Covey’s The 7 Habits of Highly Effective People helped him think about priorities. Jim Collins’s Good to Great reinforced the importance of people. Bazerman supplied a warning about decisions that outlive their usefulness.
These books did not become an instruction manual he followed without adjustment. Moving to the U.S. taught him something the manuals had not adequately conveyed: business conditions differ between countries. Culture matters. So does the stage of a company’s life. A sound general idea still needs someone to decide how it belongs in the room.
He has described finding Americans more receptive to innovative ideas than he had expected. That was his experience of the move, and it changed how literally he treated advice. Reading could improve his judgment; it could hardly relieve him of using it. Experience retained a vote.
The tension is revealing. Tanase values accumulated knowledge, but he also wants permission to revise it. The same reader who recommends books about lasting companies keeps a question ready for a plan that is going nowhere. There is room in that approach for persistence, provided persistence can still explain itself.
Three million dollars to learn where to stop
A working email validator did not automatically introduce itself to the businesses that needed it. Tanase wanted ZeroBounce visible across platforms. The company tested channels ranging from LinkedIn and Facebook to Pinterest, Instagram, TikTok and Twitter. It paid to discover where attention might become a customer.
He put the investment in understanding what worked at roughly $3 million over about three years. That distinction matters: it was a cumulative estimate for experimentation, rather than a single annual advertising bill. Some of the spending lost money. Its purpose was to produce evidence that the company could use.
“The whole idea is to have a scientific and data-driven way to get to the results.”
Liviu Tanase, on marketing experiments
His stopping rule was blunt. If a keyword converted badly, it should not remain in the budget for months. A platform that failed to reach the right audience could go. The useful channels stayed, and several smaller contributions could add up to worthwhile growth.
There is something pleasingly unromantic about this. A company can fall in love with an advertising idea as easily as with a product idea. Tanase’s account leaves less room for courtship. The campaign has to bring an answer back. An attractive theory with disappointing conversions is still disappointing.
A conceptual illustration of his stated approach. The $3 million figure is his estimate of spending over roughly three years.
The customer kept moving the finish line
Meanwhile, the product was acquiring new jobs. Cleaning a list solved one part of an email problem, but customers still had messages that failed to reach the inbox. A valid address could receive mail in spam. Configuration and sender reputation could interfere before the quality of the copy ever got a fair hearing.
Tanase has described the company’s expansion as a response to those neighboring problems. Customer feedback helped identify gaps. In the summer of 2018, ZeroBounce introduced email scoring, including a way to assess uncertainty around catch-all addresses. In spring 2020, it added server testing and inbox placement testing.
The progression gives his listening habit a concrete shape. Customers wanted to know which addresses were usable, then whether their sending setup and messages were ready. Each addition gave the company another part of the journey to examine. The original task remained recognizable even as the toolset grew.
- 2014Moves from Romania to the United States
- 2017ZeroBounce becomes fully operational
- 2018Email scoring joins the product
- 2020Deliverability tests; No. 40 on the Inc. 5000
- 2026AI-managed mailbox detection arrives
In 2020, ZeroBounce ranked No. 40 on the Inc. 5000, up from No. 851 the previous year. The company reported growth of more than 7,000 percent for the ranking period. Tanase’s account of learning the position has the unpolished pleasure of somebody who had known the company made the list, then had to wait for the number.
The following year brought his inclusion in the Forbes Next 1000. Recognition supplied a visible milestone for work whose daily subject was often invisible. Most recipients never admire the infrastructure that delivered a message. They simply expect the message to be there.
A reader who declines the homework
Before the growth figures and rankings, there were books and chess. Tanase says both had been part of his life since childhood. His first business became busy around the time he was 18, and reading had to share its space with a more demanding schedule.
He still preferred paper, although an iPad was convenient. His reading extended beyond business: Kevin Starr’s writing about California history interested him for the way small decisions could alter events years later. A newcomer to the state had found another way to examine how choices accumulate.
His refusal to take notes belongs alongside these interests. He reads and allows some things to remain. It is a modest rebellion against turning every leisure activity into administration. The book can earn its place without producing a spreadsheet at the end.
His account of social media is similarly selective. He described using the internet when he needed something, checking friends’ Facebook updates occasionally and finding useful professional information on LinkedIn. His marketing colleagues could use social platforms extensively while he limited his own browsing. Selling attention and managing your own attention turn out to require different calendars.
The fifth company is the one he wants to keep
Tanase’s concern with customer data has also shaped infrastructure decisions. He has emphasized owning the hardware behind the core service and limiting how long uploaded data remains. The current company description distinguishes its own validation infrastructure from regional file storage that may involve AWS. Control has a practical meaning here, down to where the work runs.
He also says small customers should receive the same treatment as famous ones. That principle is easy to announce and harder to sustain as a business grows. It places the ordinary account, with its ordinary delivery problem, inside the company’s idea of success.
Asked about starting another business, he has expressed no appetite to do so immediately. The difference, he says, is the team at ZeroBounce: more mature than those at his earlier companies, and a group he is proud to work with. Cybersecurity would interest him if he began again. For now, he has reasons to remain.
The work itself keeps changing. In September 2026, ZeroBounce announced classifications for mailboxes managed by autonomous AI agents. The company says the labels add information; they do not recommend deleting those contacts. Beyond asking whether an address can receive a message lies the question of what handles it after arrival.
For Tanase, that leaves another problem to investigate with the people already around him. Five companies into a career, the next decision can be to continue. He can keep the business, revise the assumptions and close the book without assigning himself any homework.