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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.
Daily Instrumentless Usage Limits
The following limits are daily usage limits for users of
Firebase Authentication with Identity Platform on the no-cost Spark plan.
These usage limits correspond directly to
Google Cloud Pricing Tiers.
Usage
Instrumentless Limit
Tier 1 Daily Active Users
3000 per day
Tier 2 Daily Active Users
2 per day
SMS Sent
10 per day
Multi Factor Authentications
10 per day
Account creation and deletion limits
Operation
Limit
New account creation
100 accounts/IP address/hour
Account deletion
10 accounts/second
Accounts per project
Account type
Limit
Anonymous user accounts
100 million
Registered user accounts
Unlimited
Email limits
Operation
Spark plan limit
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
300 emails/day
25,000 emails/day
Email link generation limits
Operation
Spark plan limit
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
1600/project/minute, as well as the pricing and limits specified on the
Pricing page
Verification code SMS messages
Firebase Authentication, no cost (Spark): 50 SMS/day
Firebase Authentication, pay as you go (Blaze): 3000 SMS/day limit
Firebase Authentication with Identity Platform, no cost (Spark): 10 SMS/day
Firebase Authentication with Identity Platform, pay as you go (Blaze): No limit
