Indeed, it is possible to configure the address in your Gmail account.
Here's how to do it:
- Log in to your Gmail account.
- Once on the interface, click on the small gear icon at the top right, then on Settings.
- Then click on Accounts and then on Add another email address.
- A new page will appear. Enter the Name and Email Address, and click on Next Step.
- In the SMTP Server box, enter securemail.webself.net and choose port: 465.
- Next, enter your Name, Email Address, and Password.
- Finally, check the Secure SSL connection option and click on Add Account.
- The system will ask you to enter your Email Address and Password again.
- You should see a confirmation and a request for a Confirmation Code.
- To retrieve the confirmation code, log in to Webmail WebSelf (this email may take a few minutes to arrive).
- Enter the code, and you're done.
Here's a short video to help you with the procedure: