You can still send through commercial services. My own email is received through Cloudflare (which does forwarding with SRS) and sent via Amazon SES (a paid ser

You can still send through commercial services. My own email is received through Cloudflare (which does forwarding with SRS) and sent via Amazon SES (a paid service, but pennies per month for manual, personal email). Deliverability and blacklists are their problem.