Courier API Rate Limits

When and how rate-limits are applied to requests made to the Courier APIs.

Written by Nate
Updated over a week ago

Courier API rate limits

Send API–not rate limited

There is no rate limit on requests made to the Send API.

If your send requests occur at a rate that exceeds your provider's rate limit, Courier's Send pipeline will retry your message for 72 hours following these Send retry rules.

Profiles API–not rate limited

There is no rate limit on requests made to the Profiles API.

Some Courier customers like to hit the Profiles API before or after hitting the Send endpoint as part of their Notifications send workflow. The Profiles API is built to scale with this type of workflow.

Preferences–not rate limited

There is no rate limit on requests made to the Preferences API.

Messages API–note rate limited

There is no rate limit on requests made to the Messages API.

Lists API

POST requests to the subscriptions endpoint are rate-limited to 20 creations per minute.

PUT requests to the Lists API are rate-limited to 20 creations per minute.

GET requests to the Lists API are not rate-limited.

Events API

PUT requests to the Events API are rate-limited to 20 creations per minute.

GET requests to the Events API are not rate-limited.

Brands API

PUT requests to the Brands API are rate-limited to 20 creations per minute.

GET requests to the Brands API are not rate-limited.

Other Rate Limits in the Courier Application

Invitations: 50 invites per 15 minutes
Login attempts: 5 attempts per 5 minutes
Categories: 20 creations per minute