Your encrypted workspace

Email, calendar, notes, passwords — all end-to-end encrypted.

For yourself, your team, or your app.

Get started free See pricing
Personal Suite

Everything encrypted

Your private workspace with zero-knowledge architecture. Only you can read your data.

Mail
E2E encrypted email @defnd.email
Calendar
Encrypted events & reminders
Notes
Zero-knowledge notes
Passwords
Secure vault with autofill
@ yourcompany.com
Business Email

Email on Your Domain

Professional email addresses for your entire team. Your brand, your identity.

  • team@yourcompany.com
  • Unlimited aliases
  • 5-minute DNS setup
Collaboration

Built for Teams

Team Management

Add and manage team members with flexible permissions

Shared Mailboxes

Collaborate on inboxes like support@ or sales@

Pro

Admin Controls

Security settings, audit logs, and compliance tools

curl 
curl -X POST https://api.defnd.email/v1/send \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "from": "you@yourcompany.com",
    "to": "user@example.com",
    "subject": "Welcome!",
    "html": "<h1>Hello</h1>"
  }'
For Developers

Transactional API

Send emails programmatically — transactional, notifications, broadcasts

  • REST API + webhooks
  • Node.js, Python, Go SDK
  • 99.9% uptime SLA
  • Delivery analytics