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Document ID: https://platform-support.certain.com/hc/en-us/articles/31653607358615-Allowlist-IPs-for-Support-Emails#split1

Allowlist IPs for Support Emails

IP Address Range and Subnet

Allowlist the following IP Address range to ensure all support emails are received.

IP Range: 3.209.202.128 - 3.209.202.255.

Subnet: 3.209.202.128/25.

Purpose and Impact

All support emails are sent from the designated IP range.

The IP address allowlist should be managed by your IT team or email service provider.

The IP address allowlist is necessary to prevent emails from being blocked or marked as spam.