Need a static outbound IP that works beyond the Heroku add-on ecosystem?
OutboundGateway gives your app two fixed EU IP addresses through a single HTTPS_PROXY setting, on any platform, with flat pricing and no request quotas.
Proximo is a long-standing Heroku add-on that routes outbound traffic from your app through a static IP address. You provision it with the Heroku CLI, your app reads a PROXIMO_URL setting, and it typically launches through a wrapper script wired into your Procfile. Every plan includes a static IP, usage analytics, and billing on your Heroku invoice. Learn more in the Heroku Dev Center article and on the Elements listing.
That model couples your egress to one platform. The wrapper is documented as not working with Node.js, PHP, or JVM based applications, removing the add-on unregisters its single assigned IP for good, and the seven hourly-billed tiers carry request and bandwidth quotas from a $5 monthly cap up to $1,250. The documentation was last updated in June 2023.
OutboundGateway takes a different shape: one HTTPS_PROXY environment variable on any runtime, two fixed EU IP addresses with automatic failover, and a flat monthly price with nothing to meter.
A factual comparison of key features. We're focused on fit, not feature count.
| Feature | OutboundGateway | Proximo |
|---|---|---|
| Platform availability | Any platform, one HTTPS_PROXY env var | Heroku add-on only |
| Infrastructure location | EU-hosted | US and Europe regions listed |
| Setup | One environment variable, no code changes | Wrapper binary plus Procfile change |
| Runtime compatibility | Works with any HTTP client | Wrapper excludes Node.js, PHP, and JVM apps |
| Static outbound IP | Two fixed EU IPs with automatic failover | Single assigned IP (unregisters on removal) |
| HTTPS/SSL proxy | Yes | Yes |
| SOCKS5 support | No | Yes, via the wrapper |
| Pricing | Simple, transparent (from €19/mo flat) | Hourly tiers, $5 to $1,250/mo caps with quotas |
📊 Note: Both services give your app a static outbound IP for HTTPS requests. Proximo adds SOCKS forwarding through its wrapper and deep Heroku marketplace integration, while OutboundGateway focuses on fixed EU IP pairs that follow your code to any platform.
If your app lives entirely on Heroku and you value marketplace billing or SOCKS forwarding, Proximo can be the more natural choice. Its listing covers ten Private Spaces regions, usage analytics, and an enterprise tier with on-call escalation.
We do one thing: fixed EU IP pairs for outbound HTTPS traffic, priced flat, supported by the founders.
Both proxy addresses sit in EU data centres, so partners, auditors, and regulated APIs see a European origin on every request.
No wrapper to install and no Procfile to edit. Set one environment variable and every outbound HTTPS request rides the fixed pair.
Your emails reach the people who run the network. Answers come from the founders, not a ticket queue.
One flat rate, no hourly metering, and no request or bandwidth quotas to keep an eye on.
If the fit is wrong, tell us within seven days of signing up and we refund you in full.
TLS passes through the proxy untouched. We never terminate or inspect your sessions, so credentials stay between you and the endpoint.
Set one environment variable and give every outbound HTTPS request a stable European origin, wherever your code runs.
Flat pricing from €19/month • 7-day refund policy • Direct founder support
For outbound HTTPS traffic, yes: any HTTP client that honors a proxy setting works with us, on any platform and any runtime. We do not replace Proximo's SOCKS forwarding or its Heroku marketplace integration, so apps relying on those should weigh them before switching.
No. We carry outbound HTTPS traffic and nothing else. Sticking to a single protocol is what keeps setup down to one environment variable.
Inside the European Union. Both addresses in your pair originate there, which matters when a partner or regulator asks where your requests come from.
Seven days, full refund. If the service is not right for your workload, say so within a week of signing up and we return the payment.
Proximo bills hourly across seven tiers, from a $5 monthly cap with 2,000 requests and 500 MB of transfer up to $1,250 with unlimited usage. OutboundGateway keeps it simple. Starting from €19/month. Flexible plans for every scale. Cancel anytime.
Tell us what you're building and we'll say honestly whether the fixed EU pair fits your setup.
Email the Founders →