Firebase Extensions Email Setup Guide

Location Mapping for Firebase Extensions

When setting up the Firebase Extensions Trigger Email extension, you’ll need to select a location that matches your Firestore database location. Here’s the mapping between Firestore location codes and the dropdown options:

Location Reference Table

Firestore Location Code	Extension Dropdown Option
nam5	Multi-region (United States)
eur3	Multi-region (Europe - Belgium and Netherlands)
us-central1	Iowa (us-central1)
us-west1	Oregon (us-west1)
us-west2	Los Angeles (us-west2)
us-west3	Salt Lake City (us-west3)
us-west4	Las Vegas (us-west4)
us-east1	South Carolina (us-east1)
us-east4	Northern Virginia (us-east4)
europe-west1	Belgium (europe-west1)
europe-west2	London (europe-west2)
europe-west3	Frankfurt (europe-west3)
asia-southeast1	Singapore (asia-southeast1)
asia-south1	Mumbai (asia-south1)
asia-northeast1	Tokyo (asia-northeast1)
asia-northeast2	Osaka (asia-northeast2)
australia-southeast1	Sydney (australia-southeast1)

How to Find Your Firestore Location

1. Go to your Firebase Console
2. Navigate to Firestore Database
3. Look for the location indicator (it will show something like “nam5” or another code)
4. Use the table above to find the matching dropdown option

Common Locations

• If your Firestore shows nam5, select Multi-region (United States)
• If your Firestore shows eur3, select Multi-region (Europe - Belgium and Netherlands)
• For single-region locations, the city name in the dropdown usually matches

Important Note

The extension MUST be installed in the same location as your Firestore database to minimize latency and costs. Cross-region communication can result in:

• Higher latency for email sending
• Additional data transfer charges
• Potential reliability issues

Need Help?

If you’re unsure about your Firestore location:

1. Check the Firestore section in Firebase Console
2. Look for the location code in the database settings
3. Refer to the table above to find the matching option