The First AfterSMTP
Client
AfterMail bridges traditional email (Gmail, Outlook, IMAP) with next-generation protocols (AfterSMTP, Mailblocks). Full-featured email client with AI assistant, protocol testing, migration tools, and blockchain-backed security.
Why AfterMail?
The first client to fully implement the AfterSMTP protocol with complete backward compatibility
Traditional Email Integration
Works perfectly with Gmail (OAuth2), Outlook (Microsoft Graph API), and any IMAP/POP3/SMTP server. Full folder management, attachments, and familiar email workflows.
Next-Gen AfterSMTP Protocol
DID-based identity, end-to-end encryption (X25519+AES-GCM-256), Ed25519 signatures, and AMF message format. Connect to the free msgs.global gateway or self-hosted AfterSMTP servers.
Mailblocks Web3 Email
Proof-of-stake spam prevention with Ethereum wallet integration. Senders stake crypto to reach your inbox. IPFS storage, quarantine system, and blockchain-verified delivery receipts.
Smart Features
AI-powered productivity tools that make email faster and smarter
AI Writing Assistant
Spell/grammar checking, writing improvement, draft generation, and tone conversion (formal/friendly). Summarize emails instantly. BYOK (Bring Your Own Key) - works with Anthropic Claude or OpenRouter.
Smart Categorization
Automatically organize emails into 8 categories: Work, Personal, Finance, Shopping, Social, Newsletters, Promotions, Spam. AI-powered or rule-based. Learns from your corrections.
Undo Send
10-second countdown after sending gives you time to catch mistakes. Cancel messages before they're delivered. Works with all account types.
Developer & Power User Tools
Built by developers, for developers - with professional debugging and testing tools
Protocol Testing
Grammar testing for SMTP, IMAP, POP3 compliance. Security verification: SPF, DKIM, DMARC, MTA-STS, BIMI, ARC. Raw session debugging and interactive protocol sessions.
Migration Wizard
Step-by-step migration from Gmail/Outlook to AfterSMTP. Bulk import thousands of messages preserving metadata. Automatic MIME → AMF format conversion.
Message Inspector
Parse and analyze both MIME and AMF messages. View raw headers, body structure, attachments, and cryptographic signatures. Perfect for debugging and protocol development.
Protocol Comparison
Understanding the differences between traditional and next-gen email protocols
Traditional SMTP/MIME
Identity: Email addresses
Encryption: TLS (transport only)
Signatures: DKIM (optional)
Format: Text-based MIME
Spam Prevention: Filters
AfterSMTP/AMF
Identity: DIDs (blockchain)
Encryption: E2E (X25519+AES)
Signatures: Ed25519 (required)
Format: Protobuf (binary)
Proof of Delivery: Blockchain receipt
Mailblocks Web3
Identity: Ethereum addresses
Storage: IPFS (distributed)
Spam Prevention: Proof-of-stake
Verification: Smart contracts
Incentives: Economic spam prevention
Built on Cutting-Edge Technology
AfterMail leverages the latest in blockchain, AI, and email protocol innovation
For Organizations & Developers
Open-source, extensible, and ready for enterprise deployment
Self-Hosted AfterSMTP Gateway
Deploy your own AfterSMTP gateway for complete control over messaging infrastructure. Connect to msgs.global network or run standalone. White-label options available.
Open Source & Extensible
Built with Go + Fyne. Full source code available on GitHub. Protocol implementations, client libraries, and comprehensive developer documentation.
Security First
Keys stored encrypted in OS keychain (macOS Keychain, Windows DPAPI, Linux Secret Service). TLS 1.3, DANE certificate pinning, and comprehensive security testing tools.