Nextjs Email

Sending email with nextjs.

Email Client

Infrastructure

• resend

Context

• Services — Where email fits in the service layer
• Platform Operations — Infrastructure that runs the mail pipeline
• Middleware — Request-level hooks before email triggers

Questions

When should email be a service boundary versus an inline side effect?

• What breaks first when transactional email volume spikes — the sender, the queue, or the template renderer?
• How do you test email delivery without sending real mail?
• When does a notification system outgrow simple email and need its own service?