Configure Gmail Routing in Google Workspace: Technical Admin Guide

What Is Gmail Routing in Google Workspace?

Gmail routing is an administrative feature that offers more control over how email messages move through their organization. Google provides both Default routing and Routing settings. Default routing is generally used for organization-wide delivery behavior, while Routing is useful for creating more specific rules or overriding normal routing behavior.

Depending on the Email Routing rule, you can:

• Route incoming emails to another recipient.
• Send copies of messages to additional recipients.
• Route outgoing emails through another mail server.
• Change the envelope recipient.
• Apply routing to selected users, groups, or organizational units.
• Send email through an external security or gateway server.
• Support split delivery and migration scenarios.
• Create special mail-flow rules for specific senders or recipients.

Prerequisites: Gmail Routing Configuration

• You have access to the Google Workspace Admin Console.
• Your administrator account has the required Gmail settings privilege.
• Gmail is enabled for the users affected by the rule.
• You know which messages the rule should affect.
• You know the destination recipient or mail server.
• If you are using another mail server, you have its hostname and required connection settings.
• You have identified the organizational unit, users, or groups that should be affected.

How to Configure Gmail Routing in Google Workspace

1. Sign in to the Google Admin Console using an administrator account.
2. Click on Menu → Apps → Google Workspace → Gmail → Routing.
3. Choose where the rule should apply. You can select the top-level organizational unit if the rule should affect the organization broadly. 
4. Under Routing, click Configure or Add Another Rule.
5. Enter a clear name for the rule. For example: Support Email Copy or Route Outbound Mail Through Security Gateway.
6. Now decide which messages should be processed by the rule. Depending on the routing scenario, you can select options for:

• Inbound messages
• Outbound messages
• Internal messages
• Messages sent to specific recipients
• Messages from specific senders

7. Next, select what Google Workspace should do when a message matches the rule. Common actions include:

• Change route
• Change envelope recipient
• Add more recipients
• Reject the message
• Modify other message-handling options

8. Depending on the routing action, Google Workspace provides additional options. You may be able to configure:

• Address lists
• Account types
• Envelope filters
• Spam handling
• TLS-related options
• Custom headers
• Subject modifications

9. Review the configuration carefully and click Save. The new rule should now appear in the Gmail Routing section. 

How to Configure a Mail Route in Google Workspace

If you want Gmail to send messages through another mail server, you need to add that server as a route before selecting it in a routing rule.

1. In the Google Admin Console, click on Apps → Google Workspace → Gmail → Hosts.
2. Add the destination mail server or host. You need information such as: Route Name, Hostname, Port, or TLS.
3. Save the new host configuration. You can then return to the Routing section and create a rule that uses this route. Google recommends adding mail servers as routes before creating routing rules that send messages to those servers.

Example: Send a Copy of Incoming Emails to Another Mailbox

Suppose your company has:

• Primary mailbox: [email protected]
• Additional mailbox: [email protected]

You want every incoming support email to reach the normal support mailbox and also send a copy to the archive mailbox. You can create a routing rule for incoming messages and use the option to add another recipient. Basic configuration

• Message type: Inbound
• Recipient: [email protected]
• Action: Add more recipients
• Additional recipient: [email protected]

After saving the rule, test it with a controlled email. This type of configuration can be useful for support teams, auditing, temporary mail monitoring, and other business workflows.

Example: Route Outgoing Gmail Through Another Server

Consider an organization that uses a third-party security gateway for outgoing email. The basic process is:

• Add the security gateway under Hosts.
• Open Gmail → Routing.
• Create a new routing rule.
• Select the appropriate outbound messages.
• Choose Change route.
• Select the mail host you previously added.
• Review the additional options. Save the rule.
• Send a test message.
• Check whether the message reaches the external recipient successfully.

This configuration should be tested carefully because an incorrect outbound rule can affect company-wide email delivery.

How to Test Gmail Routing Rules

Do not assume a routing rule is working simply because it has been saved. A proper test can help identify incorrect conditions, duplicate delivery, or routing loops before the rule affects more users. Test the rule with a controlled account. If possible, apply the rule to a test organizational unit first. Then:

Send an email to the affected address.

• Check the original mailbox.
• Check the additional recipient or destination server.
• Confirm whether the message was delivered once or multiple times.
• Check the email headers if necessary.
• Review the Google Workspace Email Log Search.

Gmail Routing Troubleshooting

1. Gmail Routing Rule Is Not Working

First, check whether:

• The rule is enabled.
• The correct organizational unit is selected.
• Gmail is enabled for the affected account.
• The correct message direction is selected.
• The sender or recipient matches the rule.
• Enough time has passed for the configuration change to take effect.
• Google states that routing changes can take up to 24 hours to apply.

2. Emails Are Being Delivered Twice

Duplicate delivery often happens when more than one rule affects the same message. Review all applicable routing rules and check whether one rule adds a recipient while another rule also changes the route. Use Email Log Search to investigate which routing behavior was applied.

3. External Mail Server Is Not Receiving Messages

Check: Hostname, Port, TLS configuration, Firewall rules, Mail server availability, and Routing rule conditions. Whether the selected message actually matches the rule. Also confirm that the destination server is correctly configured to accept mail from your Google Workspace environment.

4. Routing Rule Is Affecting Too Many Users

In case the rule is designed for a particular set of people but is impacting all, check the organizational units and account types setup. It is always advisable to test by creating a new organizational unit.

Gmail Routing vs. Default Routing

Google Workspace provides both Routing and Default Routing, and the two settings can sometimes appear similar.

Can Gmail Routing Be Used to Backup Google Workspace Emails?

Final Words

Gmail Routing in Google Workspace provides additional tools to manage email flow. With the help of routing rules, you will be able to replicate your emails, transfer messages via another server, and organize email flow during migrations. Still, it is crucial to test routing rules in order not to experience issues such as duplicated emails. If you need to create a copy of your Google Workspace mailbox data, it is better to use the professional SysInfoTools solution for backup.

Frequently Asked Questions

About The Author:

Simran Bhatia

Simran Bhatia is a technical content writer engaged in writing clear, concise, and SEO-optimized content. With a background in computer science and a passion for writing, I thrive to deliver complex technical content in simple layman terms.