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Inbound Gateway


This is a beta feature.

Here’s what you need to know:

  • Limited support: Expect minimal technical support at this stage.

  • Potential bugs: Your feedback is crucial. If you encounter any issues, report them to us at

  • Not for production: This feature is not yet ready for full production use or mission-critical applications.

  • Constant improvements: Things might change as we refine and enhance components.

  • Release updates: Stay tuned for official release news. We'll keep you posted on any changes.

This article describes Coro's Inbound Gateway email security add-on and how it can help protect your users' incoming email.

Introducing the Inbound Gateway

As standard, a Coro subscription enables organizations to configure anti-malware and anti-phishing protection for the email accounts of protected users in connected applications.

The Inbound Gateway add-on takes this protection one step further by offering a full email proxy gateway solution that intercepts all inbound emails destined for accounts in specified domains hosted on Gmail, Microsoft 365, and other third party email providers.

Inbound Gateway overview

Coro's Inbound Gateway provides real-time detection and protection for incoming email before malicious content can enter the organization's network, which reduces threat risk. Emails passing through the Inbound Gateway are thoroughly inspected for threats, greatly reducing the number of malicious or untrusted emails that enter the organization and reach their intended recipients.

Configuring the Inbound Gateway to work with your existing email provider

The Inbound Gateway is a comprehensive email security solution that offers a streamlined workflow, with seamless integration into your existing system.

The process by which you configure the Inbound Gateway to receive email from your existing provider can be summarized as follows:

Inbound Gateway integration flow

You reconfigure your DNS with Coro as the highest priority MX record, and then configure your Coro workspace with details of the email domain being protected. Finally, you configure your existing email service to set Coro as the gateway for inbound email.

In normal operation, incoming email is received by the Coro Inbound Gateway and analyzed for potential threats.

Safe emails are transparently forwarded to the recipient, and malicious emails are managed by Coro according to your selected level of protection (see How Coro handles malicious email). Coro raises tickets in the console for each potentially malicious email it encounters. This enables admin users to analyze threats and take appropriate action to safely remove malicious content, or identify false positives and release the email to its recipient.

To learn more about configuring the Coro Inbound Gateway, see Configuring the gateway.