Hi,
I have more than 8 years experience. I am expert in customization, migration, Server handling, installation, WHMCS, DNS, AWS, VPS and SMTP.
I have understood your requirement all of the mentioned in the project description. You need fix domain spf and make sure google see email as a domain.
I assure you I am able to complete this project as per requirement. Please ping me so we can discuss more about the project.
Thanks
Hitesh Goyal