How to send email without owning a domain
POST to /v1/send with your recipient. The service relays; you need no DNS or domain.
Run it
curl -s -X POST https://api.model.tools/v1/send -H 'Content-Type: application/json' -d '{"to":"u@example.com","subject":"s","body":"b"}'
Response
{"ok":true,"status":"delivered"}