G Suite provides cheap online storage and domain emails, currently AU$16.80/month for unlimited (Technically 1TB unless more than 5 users, but they haven't enforced that limit at all) data storage and custom domain email hosting.

<Overview of setup.>

• Create/own a custom domain (I recommend Freenom for free domains)
• Go to https://gsuite.google.com.au/intl/en_au/pricing.html
• Start a free trial of the Business subscription
• : rest of sign up
• : Synology backup app

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• Include in update all page using {{page>esxi:online_backup#Update}}