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

# Alternate email addresses

> Manage multiple support email addresses from a single Plain workspace.

You can configure up to 25 alternate email addresses in Plain, letting you manage multiple support inboxes (e.g. `support@`, `billing@`, `security@`) from a single workspace.

If you need separate queues across two workspaces on the same domain, this won't apply, reach out to [support@plain.com](mailto:support@plain.com) to set it up.

## How to set up alternate addresses

Go to **Settings → Email** and scroll to the Alternate addresses section.

Each alternate address must:

* Use the **same domain** as your primary support address. For example, if your primary is `help@acme.com`, valid alternates include `billing@acme.com`, but not `billing@acme.io`.

* Be **forwarded to Plain** the same way as your primary address. By setting up a forwarding rule in your email provider or domain registrar pointing to your Plain inbound address. No additional DNS records are required; the DNS setup you completed for your primary address covers all addresses on the same domain.

## How alternate addresses work

Once configured:

* Plain automatically replies from the address the customer originally contacted. A thread started by emailing `billing@acme.com` will use that address on all replies by default.

* You can manually select any of your configured addresses when composing a reply, if you need to send from a different one.

* The thread shows which address the customer contacted, so context is always clear to your team.

## Why use alternate addresses

* **Unify your workflows**: manage all incoming support emails in one place without switching tools or accounts

* **Keep communication consistent**: customers always receive replies from the address they used, automatically

* **Maintain branding across departments**: use purpose-specific addresses like `billing@` or `security@` without complicating your setup