I have on premise SP2013 and nintex workflow, how can I send a google calendar invite or event. Nintex can send appointment to MS Outlook. Also I know we can create link and send the link to the user to added it to calendar.
google calendar should be able to import ics files.
how to create ics files from workflow is described here
Create an appointment element (.ics) with Nintex Workflow 2013
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