If your website is hosted with us and you want to use Gmail you will need to change the MX records for your domain and set the Email Routing to use the Remote Mail Exchanger option.
Instructions for setting your custom DNS MX Records can be found here:
How do I set custom MX Records?
Currently the Gmail MX Records need to be set as follows:
Please note that the trailing "dot" after "COM" must be included.
Instructions for setting Email Routing to use the Remote Mail Exchanger can be found here:
How to set Email Routing to use a Remote Mail Exchanger?
Full Instructions can be found on the G Suite Administrator support site here:
How to setup MX Records for Gmail?