Simulate rate limiting and errors on Postmark APIs
This sample contains a preset to simulate rate limiting and random errors on Postmark APIs. Postmark APIs support rate limiting, which is a mechanism that informs developers of the available server resources and allows them to increase the data throughput by staying under the rate limits and avoiding throttling.
Simulate rate limiting and errors on Postmark APIs
Summary
This sample contains a preset to simulate rate limiting and random errors on Postmark APIs. Postmark APIs support rate limiting, which is a mechanism that informs developers of the available server resources and allows them to increase the data throughput by staying under the rate limits and avoiding throttling.

Compatibility
Contributors
Version history
| Version | Date | Comments |
|---|---|---|
| 1.7 | February 4, 2026 | Updated to Dev Proxy v2.1.0 |
| 1.6 | January 18, 2026 | Moved config files to .devproxy folder |
| 1.5 | January 5, 2026 | Updated to Dev Proxy v2.0.0 |
| 1.4 | June 27, 2025 | Updated to Dev Proxy v0.29.2 |
| 1.3 | January 25, 2024 | Updated schema version |
| 1.2 | January 17, 2024 | Updated plugin path |
| 1.1 | January 11, 2024 | Updated to new format |
| 1.0 | January 7, 2024 | Initial release |
Minimal path to awesome
- Get the sample:
-
Download just this sample:
npx gitload-cli https://github.com/pnp/proxy-samples/tree/main/samples/postmark-rate-limiting-errorsor
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Download as a .ZIP file and unzip it, or
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Clone this repository
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- Start Dev Proxy specifying the path to one of the config files, eg.
devproxy --config-file .devproxy/postmark-rate-limiting-rc.json
Features
- simulate rate limiting on Postmark APIs using the
postmark-rate-limiting-rc.jsonpreset - simulate several Postmark API errors using the
postmark-errors-rc.jsonpreset
For more information about the configuration options, see the documentation of the RateLimitingPlugin.
Help
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Disclaimer
THIS CODE IS PROVIDED AS IS WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING ANY IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR NON-INFRINGEMENT.