Free Google Apps Account For a user: Initially: 100 Extenal Guests Domains Emails limit Accumulative: 1 External Guest for 40 Minutes
Ex: If you have a fresh token you can send any one *. 50 Events having 100 guest - 2 Guests per event *. 25 Events having 100 guest - 4 Guests per event
Limits per Day: 36 Guests Week: 252 Guests month: ~1080 Guests
Where Purchased GSuite Calendar API gives initial limit of 1000 Guest Request
Please create pull request if you found any differences
*. Own Testing *. https://premium.wpmudev.org/forums/topic/google-calendar-usage-limits-exceeded-after-200-updates