Hi everyone I have been trying to know how to force gmail to add events to a calendar similar to how airbnb and airline tickets or even eventbrite does it, is there a standard email one can send or is it based on domain reputation to make it happen.
If we are talking about creating events in Google Calendar based on the content of an email (either inbound or outbound email) then Google already has these features called Smart features & controls. For trip information, you would need to set up your Google Account for Google Travel.
Just take note how Google indexes these search terms or metadata only includes the first 1MB of a content on an email to identify if the smart features will automatically detect and suggest a creation of event based on the content of an email. See info here
" is there a standard email one can send or is it based on domain reputation to make it happen. "
Based on the question above, the domain reputation will only be relevant if you have integrated a third-party mail service within your Google Account, assuming you have Google Workspace, you can check this link for SMTP relay setup.
Other than that, using Google Calendar API only limits you based on your Quota Limits for Google Services.
See also: