Enable Email-Forwarding for outgoing emails

I have recently started using Zoho Mail for my organisation.
From the admin control-panel I have created some users for my organisation

Since all outgoing & incoming emails on company's email id is company's property, I want to forward both these emails to an external Gmail account for backup / monitoring purposes (I want to add this feature while creating the user in admin control-panel & user should not be able to change/delete them.)

Using https://www.zoho.com/mail/help/email-forwarding.html , I have enabled forwarding for incoming emails.
I will be grateful if someone could tell me how to forward all outgoing mails (any email sent by any user from my organisation) to a Gmail account.

Zoho Desk Resources

Desk Community Learning Series
Digest
Functions
Meetups
Kbase
Resources
Glossary
Desk Marketplace
MVP Corner
Word of the Day

Topic Participants
Nelson A
Jacques Guillaumier

Sticky Posts
Important update! Re-authentication mandated for sensitive admin operations in Admin Console.
Dear Zoho Mail Community, Hope you're all doing good and staying safe! As we strive to provide you with better security for your business email needs, an additional measure has been taken to ensure more security to the sensitive Admin Operations performed
Important announcement: IPv6 support in Inbound gateway
Greetings from Zoho Mail team. We are happy to announce the support of IPv6 support for receiving emails in Zoho Mail. This post mainly addresses the admins who have configured inbound gateway for their organisation. As a part of the changes related to
Administrators now have permissions to access the Subscription and Payment details.
Hello everyone! Hope you are all staying safe during these trying times. To ensure that your organization's email service, the backbone of communication, does not get affected due to inadvertent negligence by the super administrator, we have made a few changes in our roles and permissions to handle subscription and renewal smoothly. Earlier, any organization's Subscription and Payment information in Zoho Mail could be accessed only by the organization's Super Administrator. Now, based on requests
Move ahead from Docs to WorkDrive - WorkDrive is now available in all Workplace plans!
Dear all, We are glad to announce that WorkDrive is available across all the Workplace plans, with added storage and extensive team features. Zoho WorkDrive is now available for all users, including those who subscribed before Zoho WorkDrive was introduced
Announcement - Changes in Custom login page
In continuation to our efforts in protecting your Zoho Mail account we have made a few changes in the custom login page. We are making some enhancements in the browser to server communication to make it more secure. You may be aware of the most of the modern web browsers mandate certain security practices to showing the webpages as 'Secure'. We are rolling out the security related enhancements ensure that our custom login page accessed only in https mode and the authentication is securely done