At this time, Nimble does not have the ability to send calendar invites from within the application. However, if you are using our Office 365 Calendar integration, invitees for events will receive an invitation in their email inbox.
When using Google Calendar with Nimble, you can add a contact to a Google Calendar event in Nimble and it will appear on their calendar. Your contact will not receive an invite/notification, but it will display on their calendar.
Events from your Google and Office 365 Calendars (that has been connected to Nimble in the Settings >> Networks & Imports page) will sync to Nimble and display in your Activities tab and on related contact records.
If you would like to send an invite for an event to your contact, please do so through Google Calendar.