Control how fast Courier sends to your providers

Courier has introduced provider-level send rate limits that let users control how quickly notifications are delivered to services such as Amazon SES, SMS providers, and SendGrid without managing throttling logic in their own code. Users can set limits by second, minute, or hour for each connected provider, with separate configurations for Test and Production environments; messages exceeding a limit are queued rather than dropped and are released at the configured rate. Limits can be configured through the Courier console or through the provider settings in the API using the `rate_limit` field, although API updates require submitting all provider settings, including credentials. If no limit is configured, Courier continues sending messages as quickly as possible, while the new feature helps organizations remain within varying provider-specific account and sender restrictions.

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