Outlook Calendar, Contacts & Tasks Sync — CalDAV Connector (ictMail)

The CalDAV Synchronizer for Outlook plugin keeps your Outlook calendar, contacts and tasks in sync with your ictMail account — the replacement for the retired MDaemon Outlook Connector. Email itself is still handled by a standard IMAP account in Outlook; this plugin adds calendar, contacts and task synchronization.

Requirements

• Windows PC with Outlook desktop — versions 2010, 2013, 2016, 2019, 2021 or Microsoft 365 Apps. Does not work with "New Outlook" or Outlook on the web.
• .NET Framework 4.8 (pre-installed on Windows 10/11)
• An active internet connection

Step 1 — Download

Get the plugin from either location:

• ictTech Downloads: icttech.ca → Downloads → ictMail Connectors
• Direct download: OutlookCalDavSynchronizer-4.7.1.zip (official release)

Step 2 — Install

1. Close Outlook completely.
2. Download the ZIP file and extract it to a folder (e.g. C:\Downloads\CalDavSync).
3. Run setup.exe and follow the prompts.
4. If the installer reports a missing Visual Studio Tools for Office Runtime, install it from Microsoft's site and run setup again.
5. Restart Outlook — a new CalDav Synchronizer tab appears in the ribbon.

Step 3 — Add your sync profile

1. In Outlook, open the CalDav Synchronizer ribbon → Synchronization Profiles.
2. Click the Add multiple profiles button (green + icon) → choose profile type SOGo → OK.
3. Name the profiles by resource so they're easy to identify later — e.g. ictMail Calendar, ictMail Contacts, ictMail Tasks.
4. Enter your credentials:
   • Username: your full mailbox address (e.g. info@yourdomain.com)
   • Password: your mailbox password (same as webmail)
5. Click Discover resources and assign to Outlook folders.
6. For each Calendar, Contacts (and Tasks, if listed) resource found, click the … button and choose an existing Outlook folder or create a new one.
7. Click OK. The first sync starts automatically — subsequent syncs run every 30 minutes by default.

Server settings reference

Replace yourdomain.com and info with your actual domain and mailbox name.

Notes

• The DAV URL path is case-sensitive — copy it exactly as shown if entering profiles manually.
• The plugin checks for updates automatically and will notify you when a new version is available.
• If you only need email (no calendar/contacts), a standard IMAP account in Outlook is all that's required — no plugin needed.
• For mobile devices (iPhone/Android), use the built-in Exchange/ActiveSync account type instead — see the device setup articles.