---
title: Connect a custom domain to your Client Portal in Infinity3
description: "Use a recognisable business address for your customer portal, such as **portal.yourbusiness.co.uk**. #### Before you start You’ll need access to Client Portal settings and your domain provider. Choose an unused subdomain so you do not replace your existing website or…"
url: "https://www.infinity3.co.uk/help/connect-a-custom-domain-to-your-client-portal-in-infinity3/"
updated: "2026-10-08"
category: Infinity3 Platform / Client Portal
---

# Connect a custom domain to your Client Portal in Infinity3

Use a recognisable business address for your customer portal, such as **portal.yourbusiness.co.uk**.

#### Before you start

You’ll need access to Client Portal settings and your domain provider. Choose an unused subdomain so you do not replace your existing website or another service.

Record your current portal address and any links already shared with customers.

#### Configure the address

1. Open **Memberships** → **Client Portal** → **Settings**.
2. Select **Domain Setup**.
3. Choose the **Custom domain** option.
4. Enter the intended domain or subdomain.
5. Follow the setup instructions shown in your account.
6. Add the exact requested DNS records through your domain provider.
7. Return to Infinity3 and complete the available verification steps.

Use the displayed values rather than copying website or email-domain records from another guide.

#### Check the customer experience

Allow time for DNS verification and domain setup. Open the portal’s HTTPS address in a private browser window and check its login page.

Sign in with a test customer and confirm that the expected resources load. Copy the current portal URL from the dashboard and review website buttons and onboarding messages that link to it.

#### Things to know

- Portal domain setup is separate from your website and email sending domain.
- Keep unrelated DNS records intact.
- Do not assume previously shared links have all updated automatically.

Contact Infinity3 with the hostname, verification status and error if the custom address does not work.