Mailchain
Mailchain was a London-based Web3 infrastructure company (founded 2021) that provided a messaging protocol for sending and receiving messages between blockchain wallets and Web3 identities. It ceased operations on 5 May 2026, with all user data permanently deleted.
- Company typePrivate
- Founded2021
- HeadquartersLondon, United Kingdom
- Headcount1–10
- GTM typeB2C
- OfferingSoftware
Mailchain firmographics
Firmographics- Name
- Mailchain
- Legal name
- Mailchain
- Website
- https://mailchain.com
- Company type
- Private
- Founded year
- 2021
- Operating status
- Closed
- Headcount range
- 1–10 employees
- Short description
- Mailchain was a London-based Web3 infrastructure company (founded 2021) that provided a messaging protocol for sending and receiving messages between blockchain wallets and Web3 identities. It ceased operations on 5 May 2026, with all user data permanently deleted.
- Ownership category
- akta.pro rank
Mailchain industry classification
Industry- Product category
- Web3 Messaging
- NAICS
- Private Mail Centers (561431)
- SIC
- Finance Services (6199), Security & Commodity Brokers, Dealers, Exchanges & Services (6200)
- akta.pro primary industry
- Wallet Connectivity & Session Protocols (WalletConnect, deep links, QR, auth sessions) (FSAPACAF)
Keywords
Where Mailchain is headquartered
LocationHeadquarters
- HQ city
- London
- HQ country
- United Kingdom
- HQ region
- Europe
Markets served
Mailchain business model
Business model- GTM type
- B2C
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Infrastructure, Operations
Mailchain product offering
Product offeringCore offering
Mailchain was a Web3-native messaging service that allowed users to send and receive messages addressed to blockchain wallets and Web3 identities, serving as a communication layer for the decentralized web. The service tied message addressing directly to on-chain wallet identities rather than traditional email addresses. The service was permanently discontinued on 5 May 2026.
Differentiator
Problem solved
Functional benefit
Products and services
- Mailchain Web3 Messaging Service A messaging service that allowed users to send and receive messages addressed to blockchain wallets and Web3 identities, serving as a communication layer for the decentralized web. Targeted at crypto users, DAO contributors, and Web3 participants who needed identity-native communication tied to on-chain wallet addresses rather than traditional email.
Companies that use Mailchain
Customer profileIdeal customer profiles1 record
Mailchain technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Mailchain competitors and assessment
Company assessmentDirect peers
- XMTP: XMTP is a direct competitor and category leader for Web3 wallet-to-wallet messaging protocols, serving the same developer audience (wallet builders, dApps) seeking decentralized messaging infrastructure. XMTP raised significantly more capital and became the de facto standard in this category during the same period Mailchain operated.
- Push Protocol: Push Protocol (formerly EPNS) is a Web3-native communication protocol for decentralized notifications and messaging, directly competing with Mailchain for wallet developer integrations. Push was also well-capitalized and reached multi-chain deployment, applying similar competitive pressure to Mailchain.
- WalletConnect: WalletConnect is the dominant wallet-to-dApp session/connectivity protocol, also addressing wallet connectivity and session management — the same infrastructure layer Mailchain targeted. WalletConnect's incumbent position in wallet connectivity made it especially hard for Mailchain to carve out adjacent messaging territory.
- dMail: dMail is a Web3-native email/messaging protocol targeting wallet addresses, directly mirroring Mailchain's positioning of "communication layer for Web3" between wallet identities. Both chased the same end-users (crypto natives) and wallet integrations.
Emerging players
- Blockscan Chat: Blockscan Chat is an Etherscan-affiliated messaging service enabling wallet-to-wallet communication on Ethereum, overlapping with Mailchain's core offering. Its association with Etherscan's existing user traffic made it a difficult free alternative for Mailchain to displace.
- Lens Protocol: Lens Protocol is a decentralized social graph with built-in messaging features on Web3 wallets, partially overlapping with Mailchain's wallet-messaging value proposition. While Lens is more social-graph-focused than pure messaging, both compete for the same Web3-native communication use cases.
- Farcaster: Farcaster is a sufficiently decentralized social network built on wallet identities with messaging and feed capabilities, overlapping with Mailchain's wallet-to-wallet communication thesis. Farcaster's protocol-level design and developer ecosystem presented a well-funded alternative vision.
- CyberConnect: CyberConnect is a Web3 social graph protocol with messaging and identity features, partial overlap with Mailchain's wallet-based communication layer. CyberConnect raised substantial funding and partnered with multiple L1/L2 ecosystems, intensifying competition.
- Ethereum Messaging (Cipher / Biconomy): Biconomy and adjacent Web3 infrastructure players explored wallet-based messaging and identity flows, overlapping with Mailchain's wallet-to-wallet communication use case. These competitors brought broader infrastructure stacks (gasless transactions, account abstraction) into the same wallet-developer pipeline.
Broad incumbents
- Status: Status is an established Web3 messaging and wallet application with its own network, offering peer-to-peer messaging, wallet, and dApp browser — a broader incumbent in the same general category of crypto-native communication that Mailchain targeted.
Market position
Customer concentration
Mailchain social profiles
Digital presenceMailchain financial estimates
Financial estimateRevenue estimate
Valuation estimate
Mailchain leadership team
Management profileNumber of profiles
Profiles2 records
Mailchain funding detail
Funding detailFunding overview
Funding rounds1 record
Investors5 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Mailchain M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Mailchain
What does Mailchain do?
Mailchain was a Web3-native messaging service that allowed users to send and receive messages addressed to blockchain wallets and Web3 identities, serving as a communication layer for the decentralized web. The service tied message addressing directly to on-chain wallet identities rather than traditional email addresses. The service was permanently discontinued on 5 May 2026.
When was Mailchain founded?
Mailchain was founded in 2021. It employs 1 to 10 people.
Where is Mailchain based?
Mailchain is headquartered in London, United Kingdom, in the Europe region.
Who are Mailchain's main competitors?
Direct peers on record are XMTP, Push Protocol, WalletConnect and dMail. Emerging players are Blockscan Chat, Lens Protocol, Farcaster, CyberConnect and Ethereum Messaging (Cipher / Biconomy). Status is listed as a broad incumbent.
Does Mailchain have an API?
No public API is recorded for Mailchain.
What industry is Mailchain in?
Mailchain's product category is Web3 Messaging. Its primary akta.pro industry code is FSAPACAF, Wallet Connectivity & Session Protocols (WalletConnect, deep links, QR, auth sessions). Its NAICS code is 561431 and its SIC code is 6199.