Proton should introduce its own domain registration service integrated directly into the Proton ecosystem.

Currently, users who want to use a custom domain with Proton Mail must purchase a domain from a third-party registrar and manually configure DNS records (MX, SPF, DKIM, DMARC). While this works, it adds friction. Especially for non-technical users.

An integrated domain registrar would significantly simplify onboarding by allowing users to purchase a domain and have it automatically configured for Proton Mail. This would reduce setup errors, improve security, and make the experience much more accessible.

Additionally, it would make it much easier to use custom domains with SimpleLogin.