Sending webhooks to APIs that require IP whitelisting? Your serverless functions, automation platforms, and backend services have dynamic outbound IPs. Route webhooks through a dedicated static EU IP instead.
# Route webhooks through your static IP
import requests
proxies = {
"https": "https://user:pass@eu-01.outboundgateway.com:8443"
}
requests.post(
"https://api.partner.com/webhooks",
json=payload,
proxies=proxies
)
Webhooks are critical infrastructure — but IP whitelisting and dynamic outbound IPs make reliable delivery difficult
Payment providers, banking APIs, CRMs, and B2B partner endpoints require IP whitelisting. Your webhooks get rejected if the source IP isn't on their allowlist.
Serverless functions, Kubernetes pods, and platform deployments get new outbound IPs on every scale event, deploy, or restart. Your whitelisted IP becomes invalid overnight.
When your IP changes, webhooks get 403 rejections. No retry logic helps — the IP is wrong. Critical events like payments, orders, and alerts get lost silently.
Your webhooks come from AWS Lambda, n8n, Zapier, Kubernetes, and more. Each has different IPs. You'd need to whitelist dozens of ranges across every provider.
"Whitelist these IPs or your webhooks will be blocked."
But your outbound IPs change with every deployment, scaling event, and serverless cold start. You need one stable IP to give them.
Your Service
Lambda / K8s / n8n
HTTPS Proxy
(Static EU IP)
Partner API
Whitelisted IP
The partner API sees one fixed EU IP address — every webhook you send, from any platform.
Sending webhooks from microservices, serverless functions, or Kubernetes to partner APIs with IP restrictions
Connecting automation platforms like n8n, Zapier, or Make to partner APIs that require IP whitelisting
Delivering webhook notifications to customers whose endpoints require IP allowlisting for security
Sending transaction webhooks to banking and payment APIs that mandate IP allowlisting for compliance
Set the proxy URL as an environment variable. All outbound webhook requests route through your static IP. No code changes to your webhook logic.
Route your webhook deliveries through the proxy using the standard proxies parameter.
# Option 1: Set environment variable (recommended)
# HTTPS_PROXY=https://user:pass@eu-01.outboundgateway.com:8443
# Option 2: Pass proxies explicitly
import requests
import os
proxy_url = os.environ.get(
"HTTPS_PROXY",
"https://user:pass@eu-01.outboundgateway.com:8443"
)
requests.post(
"https://api.partner.com/webhooks",
json={"event": "payment.completed", "data": payload},
proxies={"https": proxy_url}
)
Use https-proxy-agent or set the HTTPS_PROXY env var with any HTTP client.
// Set in your environment or .env
// HTTPS_PROXY=https://user:pass@eu-01.outboundgateway.com:8443
const axios = require('axios');
// axios automatically uses HTTPS_PROXY env var
await axios.post('https://api.partner.com/webhooks', {
event: 'order.created',
data: payload
});Set the proxy as an environment variable in your Lambda function configuration. Works with any runtime.
# Set in Lambda > Configuration > Environment variables
HTTPS_PROXY=https://user:pass@eu-01.outboundgateway.com:8443
HTTP_PROXY=https://user:pass@eu-01.outboundgateway.com:8443
# Most HTTP clients (requests, axios, got, fetch)
# automatically detect and use these env vars.
# No code changes needed.📖 Complete Documentation: For detailed examples, error handling, and advanced configurations, see our Python SSL Proxy Guide, Node.js Guide, and all other language guides.
EU-hosted infrastructure with GDPR-conscious data handling for your webhook delivery.
Your proxy infrastructure runs entirely within the European Union. No transatlantic routing for your webhook traffic.
Designed for GDPR-conscious environments. TLS passthrough means webhook payloads are never visible to the proxy layer.
Webhook traffic routes entirely within EU infrastructure. No detours through US-based servers that could complicate compliance.
One static IP provides a clear, auditable outbound identity for compliance requirements and partner security reviews.
One fixed IP for all webhook deliveries. Only your services use it. Whitelist once, deliver forever.
Set an environment variable. Your existing webhook delivery code works exactly as before — now with a static IP.
European data centers. GDPR-conscious setup. Perfect for businesses with EU compliance requirements.
Lambda, Kubernetes, n8n, Zapier, custom backends — unify all webhook sources under one static IP.
TLS passthrough means we can't see your webhook payloads. Sensitive event data stays private.
€29/month flat. No usage tiers, no per-webhook billing, no surprises. Cancel anytime.
Stop worrying about dynamic IPs breaking your webhook deliveries. Start using a dedicated, EU-based static IP today.
€29/month starter plan • 7-day refund policy • Direct founder support
We're happy to help you determine if OutboundGateway is the right fit for your webhook delivery infrastructure.
Contact Our Founders →