Hello,
I am an expert Web developer and Server admin having more than 7 years of experience. Well-versed with email servers, zimbra mail, gsuite mail, SMTP, Webmail, WHMCS, WHM/cPanel, Linux, Unix, Ubuntu, Linode, Lamp, Apache, SSL, SSH, VPS, VPN, OpenVPN, AWS, Digital Ocean, etc.
I have studied your job post and can help you to setup email in your Vultr object. I have already worked on same kind of tasks.
Please ping me FTP details.
Regards