Share this article
21 Adds List Feature to Bitcoin 'LinkedIn' Alternative
21 Inc, one of the best funded bitcoin startups, has released an update to its bitcoin-powered email app.
By Pete Rizzo
Updated Sep 11, 2021, 1:08 p.m. Published Mar 8, 2017, 8:44 a.m.
Make us preferred on Google
Bitcoin startup 21 Inc has released an update to its previously announced paid messaging platform, soft launched earlier this year.
STORY CONTINUES BELOW
Don't miss another story.Subscribe to the Crypto Daybook Americas Newsletter today. See all newsletters
In a Medium post today, the San Francisco-based startup debuted '21 Lists', a new function that enables 21 users to offer bitcoin as a way to incentivize VCs, CEOs and angel investors to answer email messages from unknown senders. In advertisements, the startup has sought to position the offering as "better than LinkedIn".
"Each list is a mini-directory organized by profession or skill," the post explained.
It went on to detail six lists that group participants into categories including 'VCs', 'CEOs', 'angels', 'founders' and 'blockchain'.
The update is the latest that finds 21 moving away from a former bitcoin mining hardware product play and toward software solutions it believes will spur consumer use of the digital currency.
In statements to CoinDesk earlier this month, 21 CEO Balaji Srinivasan pushed back on claims that the new product marks a pivot, indicating that its main goal is to increase bitcoin adoption.
He went on to compare the bitcoin network favorably to other forms of payment.
"[Bitcoin] allows instant receipt of funds without linking a bank account, it works across borders and it can scale up and down to very small and large payments alike," he said.
Email visualization via Shutterstock
More For You
KuCoin captured a record share of centralised exchange volume in 2025, with more than $1.25tn traded as its volumes grew faster than the wider crypto market.
What to know:
- KuCoin recorded over $1.25 trillion in total trading volume in 2025, equivalent to an average of roughly $114 billion per month, marking its strongest year on record.
- This performance translated into an all-time high share of centralised exchange volume, as KuCoin’s activity expanded faster than aggregate CEX volumes, which slowed during periods of lower market volatility.
- Spot and derivatives volumes were evenly split, each exceeding $500 billion for the year, signalling broad-based usage rather than reliance on a single product line.
- Altcoins accounted for the majority of trading activity, reinforcing KuCoin’s role as a primary liquidity venue beyond BTC and ETH at a time when majors saw more muted turnover.
- Even as overall crypto volumes softened mid-year, KuCoin maintained elevated baseline activity, indicating structurally higher user engagement rather than short-lived volume spikes.
More For You
Here’s why bitcoin’s is failing its role as a 'safe haven' versus gold
Bitcoin behaves more like an "ATM" during uncertain times, with investors quickly selling it to raise cash.
What to know:
- During recent geopolitical tensions, Bitcoin lost 6.6% of its value, while gold rose 8.6%, demonstrating bitcoin's vulnerability in times of market stress.
- Bitcoin behaves more like an "ATM" during uncertain times, with investors quickly selling it to raise cash, contrary to its reputation as a stable digital asset.
- Gold remains the preferred hedge for short-term risks, while bitcoin is better suited for long-term monetary and geopolitical uncertainties that unfold over years.
Top Stories
