Next-Generation Sovereign Email Infrastructure|Made in India

Private, high-speed email engineered for absolute sovereignty.

Zero telemetry. Biometric passkey authentication without SMS carrier toll charges. Powered by the Stalwart RFC 8620 JMAP engine with Google Drive BYOS attachment storage.

Create Free MailboxConnect Business Domain
RFC 8620 JMAP & IMAPFIDO2 WebAuthn PasskeysZero Tracking PixelsIndia DPDP Act 2023 Compliant
TLS 1.3 • JMAP Active
Launch Live Inbox
Inbox
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Starred
Sent
Drafts
Google Drive BYOS15 GB
Zero local storage surcharge
Alex Vance (Gmail)10:42 AM

Welcome to Cyberzura! Inbound delivery from personal Gmail verified

Testing inbound SMTP routing from Google mail servers. Stalwart RFC 8620 JMAP push received in 34ms...

Stalwart Mail EngineYesterday

Mailbox provisioned: ankit@cyberzura.app (Quota: 1.0 GB)

Your Cyberzura mailbox has been initialized on the Stalwart RFC 8620 JMAP cluster. Protocols listening...

Cyberzura SecuritySep 24

Hardware Passkey Registered: FIDO2 WebAuthn Attestation Verified

A platform biometric security key (Touch ID / Windows Hello) was successfully registered. Zero SMS carrier fees...

Welcome to Cyberzura! Inbound delivery from personal Gmail verified

From: alex.vance@gmail.com•PASS / 2048-BIT PASS
10:42 AM
Hey Ankit, I just triggered this inbound test from my personal Google Workspace/Gmail account to verify your inbound delivery pipeline. The cryptographic headers arrived intact: Stalwart validated our 2048-bit DKIM signature, TLS 1.3 transport was negotiated cleanly, and the JMAP push notification hit the client in 34ms. Also confirmed that the Google Drive BYOS attachment bridge stores incoming attachments without taxing the local mailbox quota. Congratulations on the launch of Cyberzura Mail! Best regards, Alex Vance Staff Infrastructure Engineer
delivery_benchmarks_report.pdf (1.2 MB)
Google Drive
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Sovereign Technology Architecture

Engineered from the ground up for privacy and speed.

Four architectural breakthroughs that set Cyberzura Mail apart from legacy ad-supported email providers.

Sub-50ms Stalwart JMAP Engine

Built on the modern Stalwart mail server implementing RFC 8620 JMAP (JSON Meta Application Protocol). Real-time server push eliminates battery-draining polling, delivering updates sub-50ms worldwide.

RFC 8620 JMAP•IMAP 993•SMTP 587 Submission

Zero-Carrier Biometric Passkeys

Authenticate securely using Touch ID, Face ID, or Windows Hello. Zero mobile SMS dependencies means immunity against SIM-swap attacks and zero telecom toll fees for onboarding.

FIDO2 WebAuthn•₹0 Carrier Toll Fees•Phishing Immune

Bring Your Own Storage (BYOS)

Attach your personal 15 GB free Google Drive or private S3 storage. Your large business attachments stay in your private cloud, liberating you from predatory storage upgrade paywalls.

15 GB Free Drive TierLearn more

Custom Business Domains & DKIM 2048

Connect your business domain (e.g. team@yourcompany.com) with instant Cloudflare DNS verification, 2048-bit DKIM cryptographic signatures, and strict DMARC quarantine.

Cloudflare DNS VerifiedSetup Domain

The Sovereign Advantage

How Cyberzura compares to legacy big-tech email.

Stop sacrificing privacy for basic communication. See the technical differences.

CapabilityLegacy Big-Tech (Gmail / Outlook)Cyberzura Sovereign Mail
Ad Targeting & Inbox MiningMined for behavioral advertising
Zero mining • DPDP Act 2023 protected
Spy Pixel TrackingImages load directly, exposing user IP
Automatic image proxy shield
Authentication & 2FARequires phone number & SIM-vulnerable SMS
Hardware FIDO2 passkeys • Zero phone lock-in
Attachment StorageProprietary paywall lock-in
Google Drive BYOS (15 GB free storage)
Modern Sync ProtocolHeavy proprietary APIs or legacy polling
Open Standard RFC 8620 JMAP & IMAP

Transparent Pricing

Fair, sovereign plans. No hidden lock-in.

Start completely free with your personal address, or upgrade for custom domains and expanded BYOS.

Personal Mailbox

Free Forever
₹0 / forever

Perfect for individuals seeking privacy and zero telemetry.

  • 1.0 GB high-speed mailbox storage
  • Personal @cyberzura.app address
  • FIDO2 Biometric Hardware Passkey login
  • RFC 8620 JMAP & IMAP/SMTP access
  • Automatic tracking pixel shielding
Claim Personal Address
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Business BYOS

Pro
₹199 / month (~$2.40)

For creators, freelancers, and businesses who want custom domains.

  • Custom domain (you@company.com)
  • Google Drive BYOS (15 GB - 2 TB attachment storage)
  • Cloudflare 1-click DNS DKIM 2048 & DMARC signing
  • Priority Stalwart JMAP synchronization queue
  • Includes everything in Personal
Connect Business Domain

Enterprise

Custom
Custom / deployment

For organizations requiring isolated clusters and compliance retention.

  • Dedicated Stalwart cluster deployment
  • On-premise S3 or Ceph storage retention
  • Custom SLA & direct engineering support
  • Custom e-discovery & compliance archiving
Contact Grievance / Sales

Ready to claim your sovereign inbox?

Create your @cyberzura.app mailbox in 60 seconds with 1-tap biometric passkey verification. No mobile phone number required.

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