The following auth operations have limitations on the frequency you can perform
them. These limitations can change without notice. Contact
Firebase
support to
discuss special use cases.
Account creation and deletion limits
Operation
Limit
New account creation
100 accounts/IP address/hour
Account deletion
10 accounts/second
Note: You can schedule a temporary increase to the account creation limit in the
Firebase console Accounts per project
Account type
Limit
Anonymous user accounts
100 million
Registered user accounts
Unlimited
Email limits
Operation
Spark plan limit
Flame and Blaze plan limit
Address verification emails
1000 emails/day
100,000 emails/day
Address change emails
1000 emails/day
10,000 emails/day
Password reset emails
150 emails/day
10,000 emails/day
Email link sign-in emails
2000 emails/day
25,000 emails/day
Email link generation limits
Operation
Spark plan limit
Flame and Blaze plan limit
Address verification links
10,000 emails/day
1,000,000 emails/day
Password reset links
1500 emails/day
100,000 emails/day
Sign-in links
20,000 emails/day
250,000 emails/day
Phone number sign-in limits
Operation
Limit
User sign-ins
See Pricing
Verification code SMS messages
50 messages/IP address/minute, 500 messages/IP address/hour
Verification requests
150 requests/IP address/hour
API limits
Operation
Limit
Operations per service account
500 requests/second
Operations per project
1000 requests/second, 10 million requests/day
