Startup profile · funding coverage
Earn.com funding, valuation and investors
Paid email and micropayments platform (formerly 21.co) — acquired by Coinbase, 2018.
Keep track of Earn.com
Save this profile to your VCT watchlist for a quick return.
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.
-
LinkedIn InMail incumbent
Paid professional messaging; no recipient compensation.
-
Substack adjacent
Creator monetization via subscriptions.
-
Patreon adjacent
Creator support platform.
-
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
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.