I'm interested of building a spreadsheet add-on that relies on external services and it seems that URLFetch is the only way of performing remote HTTP/S calls with app script.
I've reached the app script quota page to check limitations and I can see that they are
- 100.000 calls/day for GSuite plans
- 20.000 calls/day for Gmail plans
What is not clear from the documentation is if these limits are related to the whole application or just the single user installation of the add-on / application.
Also the documentation doesn't really explain if there's any way to can ask google for increased quotas for a specific application, something that you might need and do in GCP for specific apis for example.
Anybody with app script experience and with a published add-on can share some light to it ? Has anyone attempt to create a app-script that heavily uses external services ?