Contacts

An address book that follows you.

Personal and team-shared address books over open CardDAV. vCard sync to any standards client. Contacts auto-populate from mail and calendar invites — so you don't end up retyping addresses you already know.

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Personal and shared

Your contacts, your team's contacts, never confused.

Personal address books for the people in your life. Shared address books for the team — sales, support, customer accounts. Per-book access so the right people see the right contacts and no more.

  • Multiple address books per user — personal, work, project-specific.
  • Shared address books with named teammates or whole org.
  • Contact groups for distribution and bulk operations.
  • vCard import and export so you can bring contacts in and take them out cleanly.

Open by design

CardDAV. Bring any client.

Verkio Contacts speaks CardDAV — the same protocol Apple Contacts, Thunderbird, and DAVx⁵ already know. Your address book is yours: portable, syncable, never trapped in a proprietary format.

  • Sync to Apple Contacts on macOS and iOS over CardDAV — no plug-in.
  • Sync to Thunderbird and DAVx⁵ on Android.
  • vCard 4.0 import and export — round-trip preserves photos, custom fields, groups.
  • No proprietary contact format. Leave with your data intact.

Auto-populated

Contacts that show up before you need them.

Send mail to someone new and their address quietly enters your address book. Accept a calendar invite and the organiser is there too. One identity across mail, calendar, and messaging — no double entry, no duplicate cards.

  • Auto-add from sent mail (you can disable per-account).
  • Auto-add from calendar invites — organisers and attendees both.
  • Dedup heuristics so the same person doesn't show up three times.
  • One identity across mail, calendar, and messaging — one card, all surfaces.

Open standards

Built on the standards your tools already speak.

Bring your client. Take your contacts with you when you leave. No proprietary format you'll need to migrate off later.

  • CardDAV (RFC 6352)
  • vCard 4.0 (RFC 6350)
  • vCard 3.0 (legacy interop)
  • TLS 1.3

Launching July 2026

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We'll be in touch when Verkio opens.