---
title: Webhook IPs | PostGrid
description: The IP addresses used by PostGrid to send Print & Mail webhook events, for use in firewall and allowlist configurations.
---

IPs to whitelist if you’re handling PostGrid webhooks

All PostGrid Print & Mail webhooks are sent from the following IP(s):

```
52.73.47.137
```

If your environment enforces an IP whitelist for all incoming requests, please add the above IPs to ensure that webhooks work correctly.