Easy to begin
Domains are the most visible and reliable signal of ownership on the internet. Users may not understand protocols, but they recognize domain names.
Web
CNAME your own domain to AccountMaker to serve login pages and transactional email.
Service
Verify JWTs or cookies for service authentication. Completely standard.
Service-to-service
Use OAuth Token Exchange Protocol for service requests as the user or agent.
Why?
Clear legitimacy
Users can immediately tell whether a login page or email belongs to your product.
Reduced phishing risk
Consistent domains make impersonation attempts easier to detect.
Stronger deliverability
Domain alignment improves email reputation and reliability.
Simpler mental model
Users and agents do not need to learn which domains are "safe."
Make your domain the source of truth.
AccountMaker treats domains as identity infrastructure, not configuration details.