How to export your iRedmail (SOGo) calendar for Import to another email system
Use these instructions if you are looking to export all of your calendar events and tasks to another calendar system such as Exchange Online (Outlook)
Instructions
Log into the SOGo email site at https://email.muellerreports.com
From the main screen, click on the Calendar option (top left)
From the Calendar view, click on the vertical ellipses
Then scroll down and select Export
A file will be downloaded to the "Downloads" folder in the standard "ICS" format. This file can be imported to any system that accepts this calendar format.
This completes the export