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IP access management

IP Access Management in MX18 allows you to restrict access to your account (both Web App and APIs) to a defined list of trusted IP addresses. It’s a critical security feature for teams handling sensitive data and large-scale email operations.

What is IP access management?

IP access management lets you define which IP addresses are allowed to:

  • Log in to your MX18 Web Dashboard
  • Make requests to MX18 APIs

Once activated, only the declared IPs will be permitted access. All other login attempts or API calls — even with valid credentials — will be blocked.

This helps prevent:

  • Unauthorized API use
  • Login attempts from unknown locations
  • Credential theft misuse

How to enable it

To set up IP whitelisting:

  1. Log in to app.mx18.com
  2. Navigate to Settings > IP Access Management
  3. Add your trusted IP addresses or IP ranges (CIDR notation supported)
  4. Click Save & Activate
Webhooks
IP access management

Ensure you’ve included your current IP, or you may lose access immediately after activation.

Best practices

  • Restrict access to static IPs of your team or infrastructure
  • Use CIDR blocks carefully (192.168.1.0/24) only when needed
  • Periodically audit and clean unused IPs
  • Avoid whitelisting public or dynamic IPs

Enforcing IP restrictions adds an extra layer of protection beyond API keys and passwords.

Impact of enabling IP access

Once enabled:

  • All API requests must originate from a whitelisted IP
  • Dashboard logins from non-whitelisted IPs will be blocked
  • Failed attempts will not trigger brute-force alerts, but will silently fail

You can always edit or temporarily disable IP restrictions via the dashboard if locked out.

Need help?

Stuck or lost access after enabling IP filtering?

  • Contact support@mx18.com from your registered account email
  • We can help you regain access and reset restrictions