--- title: "Custom Domains Setup" description: "Custom domains allow you to brand your shortened links and email communications with your own domain name (such as go.yourcompany.com) rather than using default platform links. Connecting a custom ..." last_updated: "2026-10-12T07:02:39.296911+00:00" canonical_url: "https://www.doc0.dev/docs/934e554a-e6a1-476f-bb2f-23e62d86c3fd/guide/configuration/custom-domains-setup" --- ## Overview ### Introduction Custom domains allow you to brand your shortened links and email communications with your own domain name (such as `go.yourcompany.com`) rather than using default platform links. Connecting a custom domain increases trust, improves click-through rates, and creates a professional experience for your audience. You can connect custom domains for two main purposes in your workspace: - **Short Links Domains:** Dedicate a custom domain or subdomain exclusively for creating and tracking shortened links and affiliate programs. - **Email Domains:** Connect a custom domain for branded partner communications and email campaigns (available on Advanced plans and higher). --- ### Connecting a Custom Domain for Short Links To connect a custom domain you own for your shortened links, follow these steps: 1. Navigate to your workspace settings and select **Domains**. 2. Click **Add custom domain** and choose **Connect a domain you own**. 3. Enter your domain name (for example, `go.yourcompany.com` or your apex domain like `yourcompany.com`). 4. Configure the required DNS records provided in your dashboard at your domain provider (DNS registrar). - For an **Apex Domain** (e.g., `yourcompany.com`), configure an **A Record** pointing to `76.76.21.21`. - For a **Subdomain** (e.g., `go.yourcompany.com`), configure a **CNAME Record** pointing to `cname.dub.co`. 5. Once your DNS records are added, the system automatically checks and verifies your domain configuration. > [!TIP] > If you use Vercel or Cloudflare as your DNS provider, you may see an option to **Auto configure** using Domain Connect, which securely applies the necessary DNS records automatically with a single click. --- ### Connecting an Email Domain If your workspace is on an Advanced plan or higher, you can connect a custom email domain to send branded communications and affiliate email campaigns. 1. Navigate to your workspace settings and select **Domains**, then open the **Email** tab. 2. Click **Add domain** and enter the email domain you wish to use. 3. Configure the required **DKIM** and **SPF** records provided in your dashboard with your DNS provider to authorize email sending. 4. Optionally, add a **DMARC** record (`_dmarc` with value `v=DMARC1; p=none;`) to protect against email spoofing and build domain trust. 5. Once verified, you can begin sending branded email campaigns directly from your domain. > [!WARNING] > Each program can have only one active email domain. You cannot delete or update an email domain while there are active email campaigns using it; you must pause or complete those campaigns first. --- ### Key Concepts Review these terms to better understand how domain management works: - **Apex Domain:** The root domain without any subdomains, such as `yourcompany.com`. - **Subdomain:** A prefix added to your main domain, such as `go.yourcompany.com` or `links.yourcompany.com`. Subdomains are recommended for short links so your main website remains unaffected. - **DNS Records:** Settings at your domain registrar that tell the internet where to direct traffic for your web pages and emails. Key types include: - **A Record:** Points an apex domain to an IP address. - **CNAME Record:** Maps a subdomain to another domain name. - **TXT Record:** Used for ownership verification and security protocols like SPF and DMARC. - **Domain Connect:** An open standard protocol supported by select providers (such as Vercel and Cloudflare) that automates DNS configuration securely. --- ### Alternative Domain Options If you do not want to connect your own external domain right away, alternative domain options are available depending on your plan: - **.dub.link Subdomains:** Available for quick testing and onboarding, allowing you to launch instantly using a managed subdomain. - **Free .link Domains:** Paid accounts may be eligible to claim a free `.link` domain for one year directly through the dashboard. - **Default Branded Domains:** Workspaces can leverage pre-configured default shortcut domains for specific platforms. | Feature / Option | Availability | Purpose | | :--- | :--- | :--- | | **Custom Domains** | All plans (limits apply) | Brand short links with your own custom domain name | | **Email Domains** | Advanced & Enterprise plans | Send branded email campaigns and partner communications | | **Free .link Domain** | Paid plans | Claim a complimentary `.link` domain for one year | | **Default Domains** | Pro plan and above | Leverage built-in branded shortcut domains | --- ### Troubleshooting Verification Issues If your custom domain shows a status other than **Valid Configuration**, review the following common states: - **Pending Verification:** DNS changes can take anywhere from a few minutes up to 24 hours to propagate globally across the internet. Ensure your DNS records match the exact values shown in your settings. - **Conflicting DNS Records:** If your domain currently points to an existing website or has conflicting records, remove the conflicting records from your DNS provider before adding the required Dub records. - **Invalid Configuration:** If a domain remains unverified or misconfigured for an extended period, the system will send reminder notifications. Domains that remain invalid for more than 30 days are automatically removed from the workspace. ## Related - [Managing Short Links](https://www.doc0.dev/docs/934e554a-e6a1-476f-bb2f-23e62d86c3fd/guide/core-features/managing-short-links) - [Troubleshooting and FAQ](https://www.doc0.dev/docs/934e554a-e6a1-476f-bb2f-23e62d86c3fd/guide/troubleshooting/troubleshooting-and-faq) ## Sitemap See the full [sitemap](https://www.doc0.dev/docs/934e554a-e6a1-476f-bb2f-23e62d86c3fd/llms.txt) for all pages in this wiki.