Startup profile · funding coverage
Earn.com funding, valuation and investors
Paid email and micropayments platform (formerly 21.co) — acquired by Coinbase, 2018.
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Funding, valuation & investors
Answer-first snapshotLatest funding
Venture
$121M total raised · 2015
Latest known valuation
Not publicly disclosed
Total disclosed equity funding
$121M
Excludes debt, grants, acquisitions, secondaries, and IPO proceeds.
Current status
acquired
acquired · San Francisco, California
Investors in latest funding
Other: Andreessen Horowitz , Khosla Ventures
Overview
Earn.com (formerly 21.co) enabled paid email and micropayments — letting senders pay recipients to read messages, built on cryptocurrency rails. Raised from a16z, Khosla Ventures, and Qualcomm Ventures. Coinbase acquired Earn in April 2018 for $100M+ in cash, stock, and crypto; CEO Balaji Srinivasan became Coinbase's first CTO.
Why Earn.com is interesting
Earn pivoted from bitcoin mining hardware to paid inbox; Balaji Srinivasan became Coinbase CTO when Coinbase acquired Earn for $100M+ in 2018.
Product & use cases
Paid email inbox — senders paid crypto to reach recipients; recipients earned for reading and responding to messages.
- Paid cold outreach with recipient compensation
- Expert Q&A monetization via paid messages
- Crypto micropayments for digital communication
Key facts
- Acquired by Coinbase (Apr 2018): >$100M; Balaji Srinivasan became CTO (TechCrunch)
- Previously 21.co — bitcoin computer pivot to paid email
- ~$121M raised from a16z, Khosla, Qualcomm Ventures
Funding history (newest first)
Venture
2015 $121M total raisedSource: https://techcrunch.com/2018/04/16/coinbase-buys-earn-com/
Investors in our directory
Funds linked from Earn.com's profile — open a fund page for stage focus and related deal articles.
Competitive landscape
Edge: Early crypto-native communication monetization — precursor to creator tipping models.
Paid email never reached mass adoption but validated crypto micropayments concept. Coinbase acquisition was primarily acqui-hire for Balaji Srinivasan.
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LinkedIn InMail incumbent
Paid professional messaging; no recipient compensation.
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Substack adjacent
Creator monetization via subscriptions.
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Patreon adjacent
Creator support platform.
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Traditional email incumbent
Free; no payment rails.
Notable stories
- Balaji Srinivasan joined Coinbase as first CTO via Earn acquisition — bringing crypto thought leadership to the exchange (TechCrunch, April 2018).
Industries
Market / IPO context
Editorial / static context — not a live quote.
Related funding articles
Venture Capital Tracker pieces that cover Earn.com's financing or category context.
FAQs about Earn.com
Practical answers founders, operators, and investors typically search for.
Last updated:
Editorial note: AI tools assisted with research, structure, or drafting. Venture Capital Tracker retains human editorial responsibility for factual accuracy, relevance, and source quality before publication.