outlook.office.com
If you are not on the
outlook.office.com page you will be redirected there.
You need to click the bookmarklet once again to run the calendar export.
Send calendar
You will be redirected to Outlook™ where you can send the file to yourself.
To:
{username}@{corporate.tld} will be replaced with
{username}@gmail.com
Note: currently there's a bug which prevents attachment uploads via drag&drop.
Sync calendar
Subsequent exports / imports will update existing calendar entries in your private calendar.
Improvements
It works for me® — if you have change requests / questions
create a new issue.