> For the complete documentation index, see [llms.txt](https://docs.emaildelivery.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.emaildelivery.com/docs/velocity-mta-basics/creating-an-mta-delivery-policy/domains-page.md).
# Domains Page
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**Domains**
The domains page is the first page of the MTA policy wizard. This is where you specify the receiving mailbox domain providers that the MTA policy will be applied to such as gmail, yahoo, icloud, etc.
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Give the policy a descriptive name, this is how it will show in a [postal route](/docs/introduction/postal-routes.md).
By default, a new policy will be applied to all mailbox provider domains, with the wildcard of '\*' .
You can make the policy apply to only one mailbox provider domain and exclude all others.
You can make a policy apply to a list of multiple mailbox provider domains and exclude all others.