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

# Workspace Custom SMTP

> Use dedicated SMTP credentials for a specific OpnForm workspace

Workspace Custom SMTP lets a workspace send form email notifications through its own SMTP server instead of the instance-wide mailer.

<Info>
  Workspace Custom SMTP is a self-hosted Enterprise feature. Instance-wide
  email sending with `MAIL_*` environment variables remains available without
  an Enterprise license.
</Info>

## What this unlocks

Use Workspace Custom SMTP when:

* A workspace needs emails to come from its own domain.
* Different workspaces need different SMTP credentials.
* You want to separate sender reputation or delivery providers by workspace.

## Before you start

Make sure you have:

* An active self-hosted Enterprise license with Workspace Custom SMTP enabled
* Workspace admin access
* SMTP host, port, encryption, username, password, and sender address

## Configure Workspace Custom SMTP

<Steps>
  <Step title="Open workspace settings">
    Open the workspace that needs its own sender, then go to **Email Settings**.
  </Step>

  <Step title="Enter SMTP settings">
    Enter the SMTP host, port, encryption, username, password, and sender address.
  </Step>

  <Step title="Save the settings">
    Save the workspace email settings. Form email notifications from this workspace will use these SMTP credentials when the feature is available.
  </Step>
</Steps>

## How it relates to instance-wide email

The instance-wide `MAIL_*` configuration is still the default mailer for your self-hosted instance. Workspace Custom SMTP only overrides email sending for the workspace where it is configured.

See [Email Setup](/configuration/email-setup) for the full comparison.

## Related pages

* [Email Setup](/configuration/email-setup)
* [Self-hosted License](/deployment/self-hosted-license)
* [License Activation](/deployment/license-activation)