The following will help you if you are attempting to set up an email alias from an external domain in your Gmail but you encounter the following error:
Functionality not enabled.
You must send through yourdomain.ca SMTP servers when you send as info@yourdomain.ca. However, this functionality is not available for your account. Please contact your domain administrator for more information.
What is causing this is that your Google G-Suite or Google Workspace account does not allow per-user outbound gateways. According to Google, this setting would allow users to send mail through an external SMTP server when configuring a “from” address hosted outside your email domain.
This setting for your account is likely turned off, so follow these steps to enable it:
- Click here to navigate to your End User Access settings.
- If the link doesn’t get you to the correct page, here are the steps to navigate there manually:
- Google Admin > Apps > Google Workspace or G-Suite > Gmail > End User Access
- If the link doesn’t get you to the correct page, here are the steps to navigate there manually:
- Hover over the Allow per-user outbound gateways option and click the edit icon (pencil)
- Check the box labelled “Allow users to send mail through an external SMTP server when configuring a “from” address hosted outside your email domain” then click Save
- In our testing, the change can take up to an hour to apply to your account
