The first email with a local-first AI brain.
Token-gated mailboxes. Self-destructing messages. Wallet sign-in. Auto-tracked promises. Your knowledge graph builds itself. Your email never leaves the server.
What no other email app has
Local-first AI brain
Knowledge graph, promise tracker, decision log — all in-process. Your email never touches OpenAI or Anthropic.
Self-destructing email
Send view-once or time-bombed messages. The body wipes from our server when it expires.
Anti-AI spam shield
Detects LLM-generated cold pitches via 12 heuristic signals. Auto-quarantines the slop.
Token-gated mailboxes
Restrict your inbox to wallets holding a specific NFT. On-chain check across 5 chains.
Burner addresses
One-tap throwaway aliases. Kill the burner when spam starts. Your real address stays clean.
Email-native calendar
Mentions of meetings in your inbox become calendar suggestions automatically. CalDAV ready.
Wellbeing built in
Quiet hours auto-lock the inbox at night. Inbox health score with coaching. One-tap unsubscribe.
Argon2id passwords
GPU-resistant hashing, account lockout, server-side JWT revocation. Your account is fortress-grade.
Sign in with wallet
SIWE + ENS / Unstoppable Domain resolution. Your wallet is your identity.
It remembers the gist. Drops the words.
Traditional email stores every word you ever received. CyberBrain reads, extracts entities, builds a knowledge graph, and after 30 days drops the raw text — keeping only the facts worth remembering. A 10-year-old inbox uses the same disk as a fresh one.
- ✅ Auto-extracted promise tracker — never miss a commitment
- ✅ Decision log — what you agreed to, when, with whom
- ✅ Knowledge graph — Obsidian-style backlinks across email
- ✅ TextRank summary on every message
- ✅ Ask CyberBrain — natural-language search over your inbox
- ✅ $0/month, $0/email, no third-party AI ever reads your mail
Honest pricing. Real value.
Free
- @cybrmail.net address
- 100 emails/mo sent
- 2 GB storage
- Local-first AI brain
- 1 burner address
- E2E encryption
Verified
- 2,500 emails/mo
- 25 GB storage
- 5 burner addresses
- Wallet-verified sender badge
- Web3 features unlocked
- Token-gated inbox rules
Pro
- 25,000 emails/mo
- 100 GB storage
- 50 burner addresses
- ENS / .crypto resolution
- AI synthesis (optional Anthropic key)
- Calendar + Wellbeing suite
Business
- 100,000 emails/mo
- 500 GB storage
- 1,000 burner addresses
- Priority support
- Custom domains
- Team features (coming)
Cancel anytime. Billed monthly via your App Store account.