SendGrid · Rate Limits

Sendgrid Rate Limits

SendGrid v3 API enforces per-account, per-endpoint rate limits.

5 Limits Throttle: 429
Rate LimitingEmail

Limits

Mail Send v3 (Free) account
requests_per_minute · minute
100
Mail Send v3 (Paid) account
requests_per_minute · minute
600
Marketing Single Send account
requests_per_hour · hour
60
Contacts API account
requests_per_minute · minute
100
Stats API account
requests_per_minute · minute
600

Policies

IP warm-up
Dedicated IPs need gradual ramp.
Reputation throttling
Bounce/complaint rates can trigger ISP-level throttling.

Sources