## Thinking Path
> - Paperclip is the open source app people use to manage AI agents for
work.
> - Connections give agents controlled access to external services.
> - Experimental channels already map conversations to tasks and durable
work queues.
> - Email needs inbox ownership, recipient envelopes, delivery records,
and explicit sends.
> - This pull request adds AgentMail to that infrastructure and keeps
the provider key in the server vault.
> - Agents can receive and send email from local or sandbox execution
while the board follows each conversation in its task.
## Linked Issues or Issue Description
**Problem or motivation**
Agents need dedicated email addresses. Incoming email should become
assigned work. Internal task comments and progress must never become
outgoing email by accident.
**Proposed solution**
Add experimental AgentMail connections, an inbox assignment wizard,
durable email intake and publication, task email cards, and
authenticated API, CLI, and native runtime actions. Agents use Paperclip
credentials to request sends. Paperclip owns the provider key and
enforces access and task authority.
**Alternatives considered**
A general mailbox MCP connector does not provide durable task binding or
publication boundaries. A separate mailbox application duplicates task
collaboration. The board instead directs the agent through the normal
task conversation.
**Roadmap alignment**
This extends the existing experimental connections and task
infrastructure. Product scope and interaction design were reviewed with
the maintainer. Related connection authority work: #11831 and #11818.
The duplicate search found no competing task-based AgentMail
integration.
## What Changed
- Add AgentMail catalog data, shared contracts, company-scoped email
records, and an additive migration.
- Add vaulted setup, inbox assignment, access grants, trust guidance,
and provider-side allowlist guidance.
- Support WebSocket and signed-webhook intake through a shared durable
pipeline, deduplication, catch-up, and task wakeups.
- Queue explicit new conversations and replies with immutable send
intents, idempotency, delivery state, and uncertain-send resolution.
- Show inbound and outbound email cards in normal task conversations.
Keep internal messages internal.
- Add task-scoped CLI actions and the sandbox callback routes required
for Daytona execution.
- Provide a dedicated AgentMail skill automatically only to agents with
active authorized inbox assignments. Keep email instructions out of the
universal Paperclip skill.
- Advertise connector-owned `agentmail_inboxes`,
`agentmail_read_thread`, `agentmail_send`, and `agentmail_delivery`
tools only in eligible native sessions. Recheck live authority on
execution.
- Isolate Codex CLI connector skills by agent and skill revision.
Deliver the assigned skill in the run prompt for adapters that use
shared skill directories, including resumed turns. Keep automatic skills
out of manual persistent sync. Show them as read-only and document the
pattern in the connector playbook.
- Fix AgentMail health checks that entered local-stdio validation and
optional missing Codex credential cleanup in sandboxes.
- Add API, pipeline, authorization, sandbox, browser, and Storybook
coverage.
## Verification
- Live AgentMail testing covered WebSocket intake, signed webhooks,
restart catch-up, and a full receive → task → Daytona Codex CLI →
explicit reply → Delivered round trip. The reply was verified in the
other inbox. The normal task composer also initiated an outgoing email
child task.
- The connector-skill change was verified in the browser: AgentMail
appears once as an automatic, read-only skill with its assigned address.
Disabling experimental chat connections removes it; re-enabling restores
it. A regression test covers assignment data arriving after library
data.
- Connector regression coverage passed 178 runtime utility, email
integration, skill-route, and heartbeat tests. All 17 Codex execution
tests passed, including per-agent skill isolation, model identity,
revision changes, removal, and prompt delivery without shared skill
files.
- After rebasing onto master, all 44 focused email, heartbeat, and
native-authority tests passed. All 313 native-session executor tests
passed. The UI regression suite passed all 3 tests. These test sets
overlap earlier focused runs.
- Full workspace typecheck and build passed after the rebase. Token
gates passed. Earlier focused Playwright task/setup coverage and the
Storybook build also passed.
- Native connector tool execution uses deterministic integration tests.
Live Daytona qualification used the Codex CLI adapter; the new
shared-home prompt fallback has deterministic coverage.
- The full repository suite is run by CI. The earlier unsharded local
full-suite attempt was stopped after the equivalent CI suites passed and
is not reported as a completed local run. Greptile reviewed
`7e57dc267a8446d3c906e3cc5b8abc94fb8860eb` at 5/5 with no unresolved
threads. All server, workspace, serialized server, and browser suites
passed in CI. The build job hit a five-second timeout in a runner
transport test; both variants and the full 80-test file passed locally
with unchanged timeouts. The build passed on retry on the same commit
without code or timeout changes. All required CI gates, including the
final `ci / verify` and `ci / e2e` summaries, are green on
`7e57dc267a8446d3c906e3cc5b8abc94fb8860eb`.
## Risks
- Email from external senders can start normal agent work. Setup
recommends a low-trust agent and AgentMail sender controls. Sender
addresses never grant board membership.
- Provider timeouts can leave uncertain sends. Retries retain their
idempotency key; expired windows require reconciliation or operator
resolution.
- Connector skills and native tools are assignment-dependent and require
current access. Revocation denies retained calls; assignment changes
select a new runtime context.
- Activation remains behind the experimental-channel setting. The native
runner path has deterministic coverage; live Daytona qualification used
the Codex CLI adapter.
- Schema changes are additive. Inbox ownership is unique across
companies. Disconnect preserves provider inboxes and task history.
## Model Used
OpenAI GPT-6 (Codex). Used reasoning, repository tools, code execution,
and browser testing. The exact deployment model ID and context-window
size were not exposed in this session.
## Checklist
- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have searched GitHub for duplicate or related PRs and linked
them above
- [x] I have either (a) linked existing issues with `Fixes: #` / `Closes
#` / `Refs #` OR (b) described the issue in-PR following the relevant
issue template
- [x] I have not referenced internal/instance-local Paperclip issues or
links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip`
URLs)
- [x] My branch name describes the change (e.g. `docs/...`, `fix/...`)
and contains no internal Paperclip ticket id or instance-derived details
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] All Paperclip CI gates are green
- [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I will address all Greptile and reviewer comments before
requesting merge
---------
Co-authored-by: Paperclip <noreply@paperclip.ing>
2083bf6f9a