Mark Cuban responds to 26-year-old's cold email request for $150,000 with a message that combines admiration and disdain.

Mark Cuban responded to Bell by saying, "That's brilliant, but I hate you because now we'll receive 600 emails a week," after a Niantic spokesperson confirmed Bell's account to CNBC Make It.

Bell, 26, appeared on "Shark Tank" to request additional funding for his Austin-based app, Card.io. This social game allows users to compete for city territory through walking, running, or biking, with a free version and subscription tiers that eliminate ads and provide social media-style features for members.

In the month before the episode was filmed, Card.io generated $4,000 in revenue with customers from 70 different countries, according to Bell. He requested $150,000 from the show's panel to invest in product and user growth, Android app development, and in exchange for a 5% equity stake in his company, which was founded in 2022.

Bell, a "Shark Tank" viewer for years, revealed that his mother initially urged him to watch the show at the age of 10 in an attempt to improve his speech impediment. "I promised my mom that one day we would be on the show together, and I would bring her with me," he stated.

'I got to be part of this'

Lori Greiner, Mark Cuban, and Kevin O'Leary all expressed their inability to significantly help the business grow, with Lori and Mark citing lack of potential and Kevin stating insufficient data for investment.

Daymond John and Rashaun Williams, a venture capitalist and minority owner of the NFL's Atlanta Falcons, offered Bell $150,000 for 15% of his company, but Bell countered with 10%, which the investors rejected.

Bell's mom came on stage and encouraged him to accept the offer on the table. He agreed, and the deal was finalized after the episode's taping, Bell now says.

Williams and John stated on the show that they gave Bell a deal due to his impressive determination and grit.

"John, the founder and longtime CEO of apparel company FUBU, stated, "I got to be part of this, and I don't care how I'm part of this." He added, "I love your energy. I did the same thing. I just did it with a phone. Forty years ago, I made 50 calls a day for six months, until people picked up.""

How to write a great cold email

Cold pitches can be successful, as demonstrated by Cuban's acquisition of Cost Plus Drugs after receiving an unsolicited email from its founder, Alex Oshmyansky. To create an effective cold email, it is important to conduct research on the recipient, establish a connection, be honest and patient, according to experts.

"Vicki Salemi, a Monster career expert, emphasized the importance of connections in her interview with Make It last year. She advised leveraging the subject line in emails, such as "Hello from an [insert alma mater name] alum" or "Networking via [insert mutual contact's name]" or the [professional industry organization]."

Rewritten: To increase the chances of getting what you want, it's important to describe your unique qualities and keep your email brief. After reviewing for errors and sending it, practice patience.

""It may take a week or two, and that's normal and similar to the job search," said Salemi."

CNBC has the exclusive rights to air "Shark Tank" off-network.

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