Agent Mail Drafts

Blocks for creating, reviewing, editing, sending, and deleting email drafts in AgentMail. Drafts enable human-in-the-loop review, scheduled sending, and multi-step email composition workflows.

Agent Mail Create Draft

What it is

Create a draft email for review or scheduled sending. Use send_at for automatic future delivery.

How it works

The block calls client.inboxes.drafts.create(inbox_id, **params) to create a new draft in the specified inbox. You must provide at least the recipient list; subject, text body, HTML body, cc, bcc, and in_reply_to are all optional.

If you supply send_at, the draft is scheduled for automatic delivery at that time and the returned send_status will be scheduled. If send_at is omitted, the draft remains unsent until you explicitly send it with the Send Draft block. Any errors propagate to the block framework's global error handler, which yields them on the error output.

Inputs

Input	Description	Type	Required
inbox_id	Inbox ID or email address to create the draft in	str	Yes
to	Recipient email addresses (e.g. ['[email protected]'])	List[str]	Yes
subject	Email subject line	str	No
text	Plain text body of the draft	str	No
html	Rich HTML body of the draft	str	No
cc	CC recipient email addresses	List[str]	No
bcc	BCC recipient email addresses	List[str]	No
in_reply_to	Message ID this draft replies to, for threading follow-up drafts	str	No
send_at	Schedule automatic sending at this ISO 8601 datetime (e.g. '2025-01-15T09:00:00Z'). Leave empty for manual send.	str	No

Outputs

Output	Description	Type
error	Error message if the operation failed	str
draft_id	Unique identifier of the created draft	str
send_status	'scheduled' if send_at was set, empty otherwise. Values: scheduled, sending, failed.	str
result	Complete draft object with all metadata	Dict[str, Any]

Possible use case

Human-in-the-Loop Review — Create a draft so a human can review and approve the email before it is sent.

Scheduled Outreach — Set send_at to queue a follow-up email that delivers automatically at a future date and time.

Multi-Step Composition — Create a draft with initial content, then use the Update Draft block to refine recipients or body text in later workflow steps.

Agent Mail Delete Draft

What it is

Delete a draft or cancel a scheduled email. Removes the draft permanently.

How it works

The block calls client.inboxes.drafts.delete(inbox_id, draft_id) to permanently remove the specified draft. If the draft was scheduled for future delivery, deleting it also cancels that scheduled send.

On success the block yields success=True. Any errors propagate to the block framework's global error handler, which yields them on the error output.

Inputs

Input	Description	Type	Required
inbox_id	Inbox ID or email address the draft belongs to	str	Yes
draft_id	Draft ID to delete (also cancels scheduled sends)	str	Yes

Outputs

Output	Description	Type
error	Error message if the operation failed	str
success	True if the draft was successfully deleted/cancelled	bool

Possible use case

Cancel Scheduled Send — Delete a draft that was scheduled with send_at to prevent it from being delivered.

Clean Up Rejected Drafts — Remove drafts that a human reviewer has declined during an approval workflow.

Abort Workflow — Delete an in-progress draft when upstream conditions change and the email is no longer needed.

Agent Mail Get Draft

What it is

Retrieve a draft email to review its contents, recipients, and scheduled send status.

How it works

The block calls client.inboxes.drafts.get(inbox_id, draft_id) to fetch a single draft by its ID. It returns the draft's subject, send status, scheduled send time, and the complete draft object.

Any errors propagate to the block framework's global error handler, which yields them on the error output.

Inputs

Input	Description	Type	Required
inbox_id	Inbox ID or email address the draft belongs to	str	Yes
draft_id	Draft ID to retrieve	str	Yes

Outputs

Output	Description	Type
error	Error message if the operation failed	str
draft_id	Unique identifier of the draft	str
subject	Draft subject line	str
send_status	Scheduled send status: 'scheduled', 'sending', 'failed', or empty	str
send_at	Scheduled send time (ISO 8601) if set	str
result	Complete draft object with all fields	Dict[str, Any]

Possible use case

Approval Gate — Fetch a draft so a human reviewer can inspect its content and recipients before approving it for send.

Schedule Monitoring — Retrieve a scheduled draft to check its send_status and confirm it is still queued for delivery.

Content Verification — Read back a draft after creation or update to verify that the subject and body match expectations before proceeding.

Agent Mail List Drafts

What it is

List drafts in an AgentMail inbox. Filter by labels=['scheduled'] to find pending sends.

How it works

The block calls client.inboxes.drafts.list(inbox_id, **params) to retrieve drafts from a single inbox. You can control page size with limit, paginate with page_token, and filter by labels (for example, ['scheduled'] to find only pending sends).

The block returns the list of draft objects, a count of drafts in the current page, and a next_page_token for fetching subsequent pages. Any errors propagate to the block framework's global error handler, which yields them on the error output.

Inputs

Input	Description	Type	Required
inbox_id	Inbox ID or email address to list drafts from	str	Yes
limit	Maximum number of drafts to return per page (1-100)	int	No
page_token	Token from a previous response to fetch the next page	str	No
labels	Filter drafts by labels (e.g. ['scheduled'] for pending sends)	List[str]	No

Outputs

Output	Description	Type
error	Error message if the operation failed	str
drafts	List of draft objects with subject, recipients, send_status, etc.	List[Dict[str, Any]]
count	Number of drafts returned	int
next_page_token	Token for the next page. Empty if no more results.	str

Possible use case

Inbox Dashboard — List all drafts in an inbox to display a queue of pending emails awaiting review or approval.

Scheduled Send Audit — Filter by labels=['scheduled'] to surface every draft that is queued for future delivery and verify send times.

Batch Processing — Paginate through all drafts in an inbox to perform bulk updates or deletions in a cleanup workflow.

Agent Mail List Org Drafts

What it is

List all drafts across every inbox in your organization. Use for central approval dashboards.

How it works

The block calls client.drafts.list(**params) at the organization level, so it returns drafts across every inbox without requiring an inbox ID. You can control page size with limit and paginate with page_token.

Inputs

Input	Description	Type	Required
limit	Maximum number of drafts to return per page (1-100)	int	No
page_token	Token from a previous response to fetch the next page	str	No

Outputs

Output	Description	Type
error	Error message if the operation failed	str
drafts	List of draft objects from all inboxes in the organization	List[Dict[str, Any]]
count	Number of drafts returned	int
next_page_token	Token for the next page. Empty if no more results.	str

Possible use case

Central Approval Dashboard — List every pending draft across all inboxes so a manager can review and approve outbound emails in one place.

Organization-Wide Analytics — Count and categorize drafts across inboxes to report on email pipeline volume and bottlenecks.

Stale Draft Cleanup — Paginate through all org drafts to identify and delete old or abandoned drafts that were never sent.

Agent Mail Send Draft

What it is

Send a draft immediately, converting it into a delivered message. The draft is deleted after sending.

How it works

The block calls client.inboxes.drafts.send(inbox_id, draft_id) to deliver the draft immediately. Once the send completes, the draft is deleted from the inbox and a message object is returned in its place.

The block yields the message_id and thread_id of the newly sent email along with the complete message result. Any errors propagate to the block framework's global error handler, which yields them on the error output.

Inputs

Input	Description	Type	Required
inbox_id	Inbox ID or email address the draft belongs to	str	Yes
draft_id	Draft ID to send now	str	Yes

Outputs

Output	Description	Type
error	Error message if the operation failed	str
message_id	Message ID of the now-sent email (draft is deleted)	str
thread_id	Thread ID the sent message belongs to	str
result	Complete sent message object	Dict[str, Any]

Possible use case

Post-Approval Dispatch — Send a draft immediately after a human reviewer approves it in a review workflow.

On-Demand Notifications — Compose a draft earlier in the workflow and send it only when a triggering event occurs.

Retry After Edit — After updating a draft that failed validation, send it again without recreating it from scratch.

Agent Mail Update Draft

What it is

Update a draft's content, recipients, or scheduled send time. Use to reschedule or edit before sending.

How it works

The block calls client.inboxes.drafts.update(inbox_id, draft_id, **params) to modify an existing draft. Only the fields you provide are changed; omitted fields are left untouched. Internally, None is used to distinguish between "omit this field" and "clear this field to empty," so you can selectively update recipients, subject, body, or scheduled send time without affecting other fields.

The block returns the updated draft_id, send_status, and the complete draft result. Any errors propagate to the block framework's global error handler, which yields them on the error output.

Inputs

Input	Description	Type	Required
inbox_id	Inbox ID or email address the draft belongs to	str	Yes
draft_id	Draft ID to update	str	Yes
to	Updated recipient email addresses (replaces existing list). Omit to keep current value.	List[str]	No
subject	Updated subject line. Omit to keep current value.	str	No
text	Updated plain text body. Omit to keep current value.	str	No
html	Updated HTML body. Omit to keep current value.	str	No
send_at	Reschedule: new ISO 8601 send time (e.g. '2025-01-20T14:00:00Z'). Omit to keep current value.	str	No

Outputs

Output	Description	Type
error	Error message if the operation failed	str
draft_id	The updated draft ID	str
send_status	Updated send status	str
result	Complete updated draft object	Dict[str, Any]

Possible use case

Reschedule Delivery — Change the send_at time on a scheduled draft to delay or advance its delivery window.

Reviewer Edits — Allow a human reviewer to modify the subject or body of a draft before it is approved and sent.

Dynamic Recipient Updates — Update the recipient list based on data gathered in earlier workflow steps without recreating the draft.