# Authorization of domain and senders

Before sending the campaign, you must authorize the shipping domain and add at least one shipping address.

1. After logging in to your account, go to the **E-mai**l tab, then in the menu on the left, select **Common Settings** and go to **Sender Authorization**. Here, select the tab of the tab, which is called **Domain Authorization**.

<figure><img src="/files/OfYhYH2XaR6qJYZLpMg7" alt=""><figcaption></figcaption></figure>

2. Click **+** to add a new domain.
3. To authorize a domain, follow [our instructions](https://docs.messageflow.com/communication-channels/e-mail/authorization-of-domain-and-senders/authorizing-domains-with-web-hosts/), which include information about authorizing domains with different hosting providers.
4. Complete the domain name, expand Advanced Settings, and check the necessary checkboxes.

<figure><img src="/files/qfrHwBVMPVvSXCPAbWEQ" alt=""><figcaption></figcaption></figure>

4. Click **Next** and go to **DNS** settings.

<figure><img src="/files/QxSlMpazrXKiFnbGD5dh" alt=""><figcaption></figcaption></figure>

5. Add the necessary information and click **Verify**.
6. After successful domain verification, go to the **Sender Authorization** tab.

<figure><img src="/files/9E8199qR5ZwQjNJR41sw" alt=""><figcaption></figcaption></figure>

7. Click **+** to add a new sender.

<figure><img src="/files/ObmrNwRoTtss37fE6ZYT" alt=""><figcaption></figcaption></figure>

8. Select the appropriate SMTP domain, then enter the sender's address, select the domain, and add the name. Click Save.

Now you can proceed to create a campaign.

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