API docs v1
PATCH /v1/me/mailboxes/{mailbox_id}

Update a mailbox

scope write:outreach cost 1 RU idempotent optional

Change a mailbox's daily send limit (1 to 500), turn warmup on or off, set its signature or sender name, or make it the default. Requires an editor over every brand of an account on Pro. Mailboxes belong to the account the key acts in, so a key restricted to one brand, or a member limited to some brands, is refused with 403 forbidden; an account under the plan answers 403 account_plan_required.

Path parameters

  • mailbox_id string required

    Mailbox id, from GET /v1/me/mailboxes.

Query parameters

  • dry_run boolean optional

    Preview the call without executing it. Runs auth, scope, eligibility and body validation, then returns 200 with a dry_run object reporting the request-unit and credit cost plus a non-consuming quota snapshot. Nothing is debited, reserved, dispatched or mutated. An invalid body still returns 422.

    default: false

Header parameters

  • Idempotency-Key string optional

    Optional. A retry with the same key and body within 24 hours replays the first response.

Request body

application/json required
Type: MailboxUpdate
Example payload 
{
  "daily_send_limit": 40,
  "warmup_enabled": true
}

Responses

Updated a mailbox application/json
Type: Mailbox
  • daily_send_limit integer required

    The most emails it sends a day.

    min: 1

  • effective_daily_limit integer required

    Today's cap: lower than the limit while warming up.

    min: 1

  • email_address string required

    The address emails go out from.

  • emails_sent_today integer required

    Emails it sent today.

    min: 0

  • id string required

    Mailbox id; campaigns and sends name it as mailbox_id.

  • is_default boolean required

    The mailbox a send uses when none is named.

  • provider string required

    gmail.

  • status enum required

    expired when Gmail access lapsed; POST /v1/me/mailbox-connection-links reconnects it.

  • warming_up boolean required

    Whether today's cap is still ramping up to the daily limit.

  • created_at string (nullable) nullable

    When it was connected.

    format: `date-time`

  • display_name string (nullable) nullable

    The sender name.

  • email_signature string (nullable) nullable

    HTML signature added to its emails.

  • object string

    default: `mailbox`

  • warmup_started_at string (nullable) nullable

    When the warmup started (YYYY-MM-DD).

Example response 
{
  "created_at": "2026-09-30T10:00:00+00:00",
  "daily_send_limit": 50,
  "display_name": "Allbirds Partnerships",
  "effective_daily_limit": 20,
  "email_address": "outreach@e2e.test",
  "email_signature": "<p>Allbirds Partnerships</p>",
  "emails_sent_today": 3,
  "id": "5e6f7081-92a3-4b4c-8d5e-6f708192a3b4",
  "is_default": true,
  "object": "mailbox",
  "provider": "gmail",
  "status": "connected",
  "warming_up": true,
  "warmup_started_at": "2026-09-30"
}
Request validation failed application/json
Type: ApiError
  • error object required
    Show fields
    • code string required

      Stable machine-readable error code from the catalog.

    • message string required

      Human-readable description suitable for logging.

    • details object

      Optional, code-specific context (e.g. errors array for validation_error, retry_after for service_unavailable). Shape depends on error.code; treat as opaque otherwise.

      Show fields

      Empty object (no properties).

  • request_id string

    Server-generated correlation id for the request. Mirrors the X-Correlation-ID response header. Include this when contacting support.

    format: `uuid`

Example response 
{
  "error": {
    "code": "validation_error",
    "message": "Request validation failed"
  },
  "request_id": "9f6c4e8a-1d3b-4c8b-9f1e-7a3b1c2d3e4f"
}
Missing or invalid credentials application/json
Type: ApiError
  • error object required
    Show fields
    • code string required

      Stable machine-readable error code from the catalog.

    • message string required

      Human-readable description suitable for logging.

    • details object

      Optional, code-specific context (e.g. errors array for validation_error, retry_after for service_unavailable). Shape depends on error.code; treat as opaque otherwise.

      Show fields

      Empty object (no properties).

  • request_id string

    Server-generated correlation id for the request. Mirrors the X-Correlation-ID response header. Include this when contacting support.

    format: `uuid`

Example response 
{
  "error": {
    "code": "unauthorized",
    "message": "Missing or invalid credentials"
  },
  "request_id": "9f6c4e8a-1d3b-4c8b-9f1e-7a3b1c2d3e4f"
}
You do not have permission to access this resource application/json
Type: ApiError
  • error object required
    Show fields
    • code string required

      Stable machine-readable error code from the catalog.

    • message string required

      Human-readable description suitable for logging.

    • details object

      Optional, code-specific context (e.g. errors array for validation_error, retry_after for service_unavailable). Shape depends on error.code; treat as opaque otherwise.

      Show fields

      Empty object (no properties).

  • request_id string

    Server-generated correlation id for the request. Mirrors the X-Correlation-ID response header. Include this when contacting support.

    format: `uuid`

Example response 
{
  "error": {
    "code": "forbidden",
    "message": "You do not have permission to access this resource"
  },
  "request_id": "9f6c4e8a-1d3b-4c8b-9f1e-7a3b1c2d3e4f"
}
Resource not found application/json
Type: ApiError
  • error object required
    Show fields
    • code string required

      Stable machine-readable error code from the catalog.

    • message string required

      Human-readable description suitable for logging.

    • details object

      Optional, code-specific context (e.g. errors array for validation_error, retry_after for service_unavailable). Shape depends on error.code; treat as opaque otherwise.

      Show fields

      Empty object (no properties).

  • request_id string

    Server-generated correlation id for the request. Mirrors the X-Correlation-ID response header. Include this when contacting support.

    format: `uuid`

Example response 
{
  "error": {
    "code": "not_found",
    "message": "Resource not found"
  },
  "request_id": "9f6c4e8a-1d3b-4c8b-9f1e-7a3b1c2d3e4f"
}
Resource conflict application/json
Type: ApiError
  • error object required
    Show fields
    • code string required

      Stable machine-readable error code from the catalog.

    • message string required

      Human-readable description suitable for logging.

    • details object

      Optional, code-specific context (e.g. errors array for validation_error, retry_after for service_unavailable). Shape depends on error.code; treat as opaque otherwise.

      Show fields

      Empty object (no properties).

  • request_id string

    Server-generated correlation id for the request. Mirrors the X-Correlation-ID response header. Include this when contacting support.

    format: `uuid`

Example response 
{
  "error": {
    "code": "conflict",
    "message": "Resource conflict"
  },
  "request_id": "9f6c4e8a-1d3b-4c8b-9f1e-7a3b1c2d3e4f"
}
Request body did not match the expected schema application/json
Type: ApiError
  • error object required
    Show fields
    • code string required

      Stable machine-readable error code from the catalog.

    • message string required

      Human-readable description suitable for logging.

    • details object

      Optional, code-specific context (e.g. errors array for validation_error, retry_after for service_unavailable). Shape depends on error.code; treat as opaque otherwise.

      Show fields

      Empty object (no properties).

  • request_id string

    Server-generated correlation id for the request. Mirrors the X-Correlation-ID response header. Include this when contacting support.

    format: `uuid`

Example response 
{
  "error": {
    "code": "body_validation_error",
    "message": "Request body did not match the expected schema"
  },
  "request_id": "9f6c4e8a-1d3b-4c8b-9f1e-7a3b1c2d3e4f"
}
Per-minute rate limit exceeded application/json
Type: ApiError
  • error object required
    Show fields
    • code string required

      Stable machine-readable error code from the catalog.

    • message string required

      Human-readable description suitable for logging.

    • details object

      Optional, code-specific context (e.g. errors array for validation_error, retry_after for service_unavailable). Shape depends on error.code; treat as opaque otherwise.

      Show fields

      Empty object (no properties).

  • request_id string

    Server-generated correlation id for the request. Mirrors the X-Correlation-ID response header. Include this when contacting support.

    format: `uuid`

Example response 
{
  "error": {
    "code": "rate_limit_exceeded",
    "message": "Per-minute rate limit exceeded"
  },
  "request_id": "9f6c4e8a-1d3b-4c8b-9f1e-7a3b1c2d3e4f"
}
An unexpected error occurred application/json
Type: ApiError
  • error object required
    Show fields
    • code string required

      Stable machine-readable error code from the catalog.

    • message string required

      Human-readable description suitable for logging.

    • details object

      Optional, code-specific context (e.g. errors array for validation_error, retry_after for service_unavailable). Shape depends on error.code; treat as opaque otherwise.

      Show fields

      Empty object (no properties).

  • request_id string

    Server-generated correlation id for the request. Mirrors the X-Correlation-ID response header. Include this when contacting support.

    format: `uuid`

Example response 
{
  "error": {
    "code": "internal_error",
    "message": "An unexpected error occurred"
  },
  "request_id": "9f6c4e8a-1d3b-4c8b-9f1e-7a3b1c2d3e4f"
}
Service temporarily unavailable, please retry application/json
Type: ApiError
  • error object required
    Show fields
    • code string required

      Stable machine-readable error code from the catalog.

    • message string required

      Human-readable description suitable for logging.

    • details object

      Optional, code-specific context (e.g. errors array for validation_error, retry_after for service_unavailable). Shape depends on error.code; treat as opaque otherwise.

      Show fields

      Empty object (no properties).

  • request_id string

    Server-generated correlation id for the request. Mirrors the X-Correlation-ID response header. Include this when contacting support.

    format: `uuid`

Example response 
{
  "error": {
    "code": "service_unavailable",
    "message": "Service temporarily unavailable, please retry"
  },
  "request_id": "9f6c4e8a-1d3b-4c8b-9f1e-7a3b1c2d3e4f"
}