CalendarSpamRemove removes any pending calendar invite from the currently visible month that is not from a member of your guild or from someone in your friends list. Optionally, the author of the spam can be reported. Reports are only made once for each unique author.
As installed, CalendarSpamRemove will not remove or report until configured to do so using slash commands. The slash command "/csr" or "/calendarspamremove" will print the help text, "/csr remove" will toggle the remove option, and "/csr complain" will toggle the report (complaint) option. The remove and report (complaint) options are saved (in SavedVariables) across your entire account.
Hash lists of authors that have been removed, authors that have been reported, and titles of removed invites are also saved (in SavedVariables) but there are no options for in game display at this time.
Slash commands also exist for displaying a summary or erasing all the saved data.