$10 USD per user per year Fully functional trial for whole org for 15 days, then charged $10/user/year.
Here is the solution to the missing functionality in Salesforce for receiving an email notification when your meeting request sent from Salesforce Event is responded to. With this app, get an email notification of the meeting request response.
We do not take responsibility for the performance of Salesforce. If you don't receive emails it may be to third party apps like email servers/services and Salesforce.