Troubleshooting OTP Code Delivery for Hadrius Account Access

Last updated: July 23, 2026

If you are experiencing difficulties receiving your One-Time Password (OTP) code for Hadrius login or account creation, please follow these troubleshooting steps.

1. Perform Initial Checks

Before contacting support, please perform the following checks:

  1. Verify Your Email Address: Ensure you are using the exact email address (all lowercase) that received your Hadrius invitation.

    1. Check Spam/Junk Folders: Look in your spam or junk email folders for messages from hello@mail.hadrius.com.

2. Contact Your IT Department

If you have completed the initial checks and still have not received your OTP code, the issue may be related to your organization's email security settings. Please contact your internal IT department and request the following:

  • Whitelist Sender Domain: Ask them to whitelist emails and links originating from sendgrid.net. This ensures that OTP codes sent via our system are not blocked by your organization's firewalls or email filters.