> ## Documentation Index
> Fetch the complete documentation index at: https://docs.superoffice.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Add mailing domains

> Add items to the Mailing Domain list

When the global preference **Only use approved e-mail sending domains** is set to **Yes**, users will only be able to send emails from domains added to this list in SuperOffice CRM. It is therefore important to add approved domains with a valid [Sender Policy Framework (SPF)][1] record to this list.

<Note>
  The global preference **Only use approved e-mail sending domains** in the **Marketing** group must be set to **Yes** in order to use the Mailing Domain list.
</Note>

## Steps

1. In **Settings and maintenance**, click **Lists** and select **Mailing domains**.

2. Click **Add** to add a new approved domain.

3. Add the domain name and click **Save**. The system will conduct an SPF look-up to check if the domain has a valid SPF record. If not, a warning will appear telling you that a valid SPF record is required for mailing domains. Click **OK** and try a different domain.

4. If the domain passes the SPF look-up, it will be added to the list of approved domains, and users can send mailings from this domain.

<Note>
  You can set up an SPF record for your domain to ensure that your organization can send mailings with increased deliverability.
</Note>

[1]: /en/online/mail-services/mailgun/spf/index


## Related topics

- [MailingDomains table](/en/database/tables/mailingdomains.md)
- [Tutorial - form response mailing](/en/marketing/mailing/learn/create/tutorial-form-mailing.md)
- [Tutorial - email mailing](/en/marketing/mailing/learn/create/tutorial-email-mailing.md)
- [What's new in version 10.2.6.1248](/release-notes/database/changes-10.2.6.md)
- [What's new in version 10.2.7.5452](/release-notes/database/changes-10.2.7.md)
- [What's new in version 10.2.8.655](/release-notes/database/changes-10.2.8.md)