---
kind: task
slug: manual-email-verification
title: Manual email verification — add an email outside an OAuth provider
plan_slug: multitenant-saas-hardening
epic_slug: tenant-lifecycle
status: draft
priority: P2
tenant_id: global
owner: unassigned
cursor_todo_id: null
updated_at: "2026-06-02"
---

# Task summary

Let a user add a new email to their profile (one they don't have an OAuth account for) by typing it, receiving a one-time verification code, and entering the code. Required so people can accept invites sent to emails they only use for forwarding / aliases / etc.

## Why deferred from the invites convoy

`Task-multi-email-identity` populates the identities table from OAuth provider claims only. That covers the common case (sign in via GitHub, GitHub knows your verified GitHub email). It does NOT cover: "I have a personal Gmail I never use to log in, and someone invited me at that address."

This is real product surface but requires:

- Verification token table (or reuse `verification_tokens` which NextAuth already provides).
- An outbound email send — needs a chosen provider (Resend / Postmark / SES). The invites convoy explicitly deferred email-send to a follow-up because picking a provider is its own discussion.
- Rate-limit on code requests (3/hour/email) — overlaps with `Task-rate-limit-and-abuse-guardrails`.
- A code-entry UI on the profile page.

## Scope (sketch — refine when scheduled)

- Profile UI: "Add email" button → input → "Send code" → 6-digit code entry.
- Backend: `identity.requestEmailVerification({ email })` (rate-limited), `identity.confirmEmailVerification({ email, code })`.
- On confirm, insert `user_email_identities` with `source='manual'`, `verified_at=now()`.
- Reject if the email is already a verified identity on another user (same rule as OAuth case).

## Acceptance criteria (draft)

- [ ] User can add a verified email to their profile without going through OAuth.
- [ ] Codes expire in 15 minutes; max 3 sends per email per hour.
- [ ] Confirmed emails appear in the "Linked emails" section with `source='manual'`.

## Links

- Epic: `./Epic-tenant-lifecycle.md`
- Depends on: `./Task-multi-email-identity.md`, transactional email provider decision.