## Send Campaign

**post** `/print-mail/v1/campaigns/{id}/send`

Send a campaign for processing.

This action transitions a campaign from the `draft` status to `creating_orders`.
You can optionally specify a future `sendDate`. Once sent, the campaign cannot be updated.

### Path Parameters

- `id: string`

### Body Parameters

- `sendDate: optional string or string`

  The date and time the campaign should be sent. Must be in the future. If omitted, defaults to the earliest possible processing date.

  - `string`

  - `string`

### Returns

- `Campaign object { id, createdAt, createdCount, 16 more }`

  Represents a bulk mail campaign.

  - `id: string`

    A unique ID prefixed with campaign_

  - `createdAt: string`

    The UTC time at which this resource was created.

  - `createdCount: number`

    The number of orders successfully created for this campaign.

  - `live: boolean`

    `true` if this is a live mode resource else `false`.

  - `mailingList: string`

    The ID of the mailing list associated with this campaign.

  - `status: "drafting" or "changes_required" or "creating_orders" or 4 more`

    Status of the campaign lifecycle.

    - `"drafting"`

    - `"changes_required"`

    - `"creating_orders"`

    - `"draft"`

    - `"ready"`

    - `"printing"`

    - `"processed_for_delivery"`

  - `updatedAt: string`

    The UTC time at which this resource was last updated.

  - `cheque: optional object { bankAccount, currencyCode, description, 12 more }`

    Inline cheque configuration for a campaign. All fields are optional since campaigns may be in a partial state during drafting.

    - `bankAccount: optional string`

      ID of the bank account to use for the cheque.

    - `currencyCode: optional "CAD" or "USD"`

      Enum representing the supported currency codes.

      - `"CAD"`

      - `"USD"`

    - `description: optional string`

      An optional description.

    - `envelope: optional string`

      The custom envelope ID or `"standard"`.

    - `letterSettings: optional object { color }`

      Settings for the attached letter (e.g., color printing).

      - `color: optional boolean`

        Whether to print the attached letter in color.

    - `letterTemplate: optional string`

      ID of a template for an optional attached letter. Cannot be used with `letterPDF`.

    - `letterUploadedPDF: optional string`

      A signed URL to the attached letter PDF, if any.

    - `logo: optional string`

      A publicly accessible URL for the logo to print on the cheque.

    - `mailingClass: optional "first_class" or "standard_class" or "express" or 23 more`

      Mailing class for the cheque.

      - `"first_class"`

      - `"standard_class"`

      - `"express"`

      - `"certified"`

      - `"certified_return_receipt"`

      - `"registered"`

      - `"usps_first_class"`

      - `"usps_standard_class"`

      - `"usps_eddm"`

      - `"usps_express_2_day"`

      - `"usps_express_3_day"`

      - `"usps_first_class_certified"`

      - `"usps_first_class_certified_return_receipt"`

      - `"usps_first_class_registered"`

      - `"usps_express_3_day_signature_confirmation"`

      - `"usps_express_3_day_certified"`

      - `"usps_express_3_day_certified_return_receipt"`

      - `"ca_post_lettermail"`

      - `"ca_post_personalized"`

      - `"ca_post_neighbourhood_mail"`

      - `"ups_express_overnight"`

      - `"ups_express_2_day"`

      - `"ups_express_3_day"`

      - `"royal_mail_first_class"`

      - `"royal_mail_second_class"`

      - `"au_post_second_class"`

    - `memo: optional string`

      Memo line text for the cheque.

    - `mergeVariables: optional map[unknown]`

      Default merge variables for the cheque.

    - `message: optional string`

      Message included on the cheque stub.

    - `metadata: optional map[string]`

      Optional key-value metadata.

    - `returnEnvelope: optional string`

      ID of a return envelope to include.

    - `size: optional ChequeSize`

      Enum representing the supported cheque sizes.

      - `"us_letter"`

      - `"us_legal"`

  - `defaultSenderContact: optional string`

    The ID of the default sender contact to use for orders if not specified per recipient.

  - `description: optional string`

    An optional string describing this resource. Will be visible in the API and the dashboard.

  - `errors: optional array of object { message, type }`

    A list of processing errors encountered, if any. Present when status is 'changes_required'.

    - `message: string`

      A human-readable message describing the error.

    - `type: "processing_error" or "internal_error"`

      Type of error encountered during campaign processing.

      - `"processing_error"`

      - `"internal_error"`

  - `letter: optional object { addressPlacement, attachedPDF, color, 13 more }`

    Inline letter configuration for a campaign. All fields are optional since campaigns may be in a partial state during drafting.

    - `addressPlacement: optional AddressPlacement`

      Enum representing the placement of the address on the letter.

      - `"top_first_page"`

      - `"insert_blank_page"`

    - `attachedPDF: optional AttachedPdf`

      Model representing an attached PDF.

      - `file: string`

        The file (multipart form upload) or URL pointing to a PDF for the attached PDF.

      - `placement: "before_template" or "after_template"`

        Enum representing the placement of the attached PDF.

        - `"before_template"`

        - `"after_template"`

    - `color: optional boolean`

      Whether to print in color.

    - `description: optional string`

      An optional description.

    - `doubleSided: optional boolean`

      Whether to print on both sides of the paper.

    - `envelope: optional string`

      The custom envelope ID or `"standard"`.

    - `envelopeType: optional "standard_double_window" or "flat"`

      The type of envelope used for the letter.

      - `"standard_double_window"`

      - `"flat"`

    - `mailingClass: optional "first_class" or "standard_class" or "express" or 23 more`

      Mailing class for the letter.

      - `"first_class"`

      - `"standard_class"`

      - `"express"`

      - `"certified"`

      - `"certified_return_receipt"`

      - `"registered"`

      - `"usps_first_class"`

      - `"usps_standard_class"`

      - `"usps_eddm"`

      - `"usps_express_2_day"`

      - `"usps_express_3_day"`

      - `"usps_first_class_certified"`

      - `"usps_first_class_certified_return_receipt"`

      - `"usps_first_class_registered"`

      - `"usps_express_3_day_signature_confirmation"`

      - `"usps_express_3_day_certified"`

      - `"usps_express_3_day_certified_return_receipt"`

      - `"ca_post_lettermail"`

      - `"ca_post_personalized"`

      - `"ca_post_neighbourhood_mail"`

      - `"ups_express_overnight"`

      - `"ups_express_2_day"`

      - `"ups_express_3_day"`

      - `"royal_mail_first_class"`

      - `"royal_mail_second_class"`

      - `"au_post_second_class"`

    - `mergeVariables: optional map[unknown]`

      Default merge variables for the letter.

    - `metadata: optional map[string]`

      Optional key-value metadata.

    - `paper: optional "standard" or "premium_paper_letter_standard_white_70lb" or "premium_paper_letter_standard_white_80lb" or string`

      Premium paper selection ("standard" or a premium paper ID). If omitted, org default is used when configured; otherwise "standard".

      - `LetterBuiltInPremiumPaperID = "standard" or "premium_paper_letter_standard_white_70lb" or "premium_paper_letter_standard_white_80lb"`

        Built-in paper IDs for letter products. Actual availability depends on your organization settings.

        - `"standard"`

        - `"premium_paper_letter_standard_white_70lb"`

        - `"premium_paper_letter_standard_white_80lb"`

      - `PremiumPaperID = string`

        Premium paper identifier.

        `standard` is always accepted. Organizations may also have additional
        custom `premium_paper_*` IDs beyond the built-in values documented here.

    - `perforatedPage: optional 1`

      Which page number should be perforated (if any).

      - `1`

    - `returnEnvelope: optional string`

      ID of a return envelope to include.

    - `size: optional LetterSize`

      Enum representing the supported letter sizes.

      - `"us_letter"`

      - `"a4"`

    - `template: optional string`

      ID of a template for the letter content. Cannot be used with `pdf`.

    - `uploadedPDF: optional string`

      A signed URL to the uploaded PDF, if any.

  - `metadata: optional map[unknown]`

    See the section on Metadata.

  - `orderPreviewURL: optional string`

    A temporary URL to preview the first rendered order, available once the campaign status is 'draft' or later.

  - `postcard: optional object { backTemplate, description, frontTemplate, 6 more }`

    Inline postcard configuration for a campaign. All fields are optional since campaigns may be in a partial state during drafting.

    - `backTemplate: optional string`

      ID of the template for the back side. Cannot be used with `pdf`.

    - `description: optional string`

      An optional description.

    - `frontTemplate: optional string`

      ID of the template for the front side. Cannot be used with `pdf`.

    - `mailingClass: optional "first_class" or "standard_class" or "express" or 23 more`

      Mailing class for the postcard.

      - `"first_class"`

      - `"standard_class"`

      - `"express"`

      - `"certified"`

      - `"certified_return_receipt"`

      - `"registered"`

      - `"usps_first_class"`

      - `"usps_standard_class"`

      - `"usps_eddm"`

      - `"usps_express_2_day"`

      - `"usps_express_3_day"`

      - `"usps_first_class_certified"`

      - `"usps_first_class_certified_return_receipt"`

      - `"usps_first_class_registered"`

      - `"usps_express_3_day_signature_confirmation"`

      - `"usps_express_3_day_certified"`

      - `"usps_express_3_day_certified_return_receipt"`

      - `"ca_post_lettermail"`

      - `"ca_post_personalized"`

      - `"ca_post_neighbourhood_mail"`

      - `"ups_express_overnight"`

      - `"ups_express_2_day"`

      - `"ups_express_3_day"`

      - `"royal_mail_first_class"`

      - `"royal_mail_second_class"`

      - `"au_post_second_class"`

    - `mergeVariables: optional map[unknown]`

      Default merge variables for the postcard.

    - `metadata: optional map[string]`

      Optional key-value metadata.

    - `paper: optional "standard" or "premium_paper_heavy_1_glossy" or "premium_paper_postcard_uv_glossy_ss" or 2 more or string`

      Premium paper selection ("standard" or a premium paper ID). If omitted, org default is used when configured; otherwise "standard".

      - `PostcardBuiltInPremiumPaperID = "standard" or "premium_paper_heavy_1_glossy" or "premium_paper_postcard_uv_glossy_ss" or 2 more`

        Built-in paper IDs for postcard products. Actual availability depends on your organization settings.

        - `"standard"`

        - `"premium_paper_heavy_1_glossy"`

        - `"premium_paper_postcard_uv_glossy_ss"`

        - `"premium_paper_postcard_uv_glossy_ss_120lb"`

        - `"premium_paper_postcard_satin_ds"`

      - `PremiumPaperID = string`

        Premium paper identifier.

        `standard` is always accepted. Organizations may also have additional
        custom `premium_paper_*` IDs beyond the built-in values documented here.

    - `size: optional "6x4" or "9x6" or "11x6"`

      Enum representing the supported postcard sizes.

      - `"6x4"`

      - `"9x6"`

      - `"11x6"`

    - `uploadedPDF: optional string`

      A signed URL to the uploaded PDF, if any.

  - `reportURL: optional string`

    A temporary URL to download the processing report, available once the campaign is in the `ready` status.

  - `selfMailer: optional object { description, insideTemplate, mailingClass, 5 more }`

    Inline self-mailer configuration for a campaign. All fields are optional since campaigns may be in a partial state during drafting.

    - `description: optional string`

      An optional description.

    - `insideTemplate: optional string`

      ID of the template for the inside. Cannot be used with `pdf`.

    - `mailingClass: optional "first_class" or "standard_class" or "express" or 23 more`

      Mailing class for the self-mailer.

      - `"first_class"`

      - `"standard_class"`

      - `"express"`

      - `"certified"`

      - `"certified_return_receipt"`

      - `"registered"`

      - `"usps_first_class"`

      - `"usps_standard_class"`

      - `"usps_eddm"`

      - `"usps_express_2_day"`

      - `"usps_express_3_day"`

      - `"usps_first_class_certified"`

      - `"usps_first_class_certified_return_receipt"`

      - `"usps_first_class_registered"`

      - `"usps_express_3_day_signature_confirmation"`

      - `"usps_express_3_day_certified"`

      - `"usps_express_3_day_certified_return_receipt"`

      - `"ca_post_lettermail"`

      - `"ca_post_personalized"`

      - `"ca_post_neighbourhood_mail"`

      - `"ups_express_overnight"`

      - `"ups_express_2_day"`

      - `"ups_express_3_day"`

      - `"royal_mail_first_class"`

      - `"royal_mail_second_class"`

      - `"au_post_second_class"`

    - `mergeVariables: optional map[unknown]`

      Default merge variables for the self-mailer.

    - `metadata: optional map[string]`

      Optional key-value metadata.

    - `outsideTemplate: optional string`

      ID of the template for the outside. Cannot be used with `pdf`.

    - `size: optional "8.5x11_bifold" or "8.5x11_trifold" or "9.5x16_trifold"`

      Enum representing the supported self-mailer sizes.

      - `"8.5x11_bifold"`

      - `"8.5x11_trifold"`

      - `"9.5x16_trifold"`

    - `uploadedPDF: optional string`

      A signed URL to the uploaded PDF, if any.

  - `sendDate: optional string`

    The scheduled date and time for the campaign to be sent.

  - `snapPack: optional object { description, insideTemplate, mailingClass, 5 more }`

    Inline snap pack configuration for a campaign. All fields are optional since campaigns may be in a partial state during drafting.

    - `description: optional string`

      An optional description.

    - `insideTemplate: optional string`

      ID of the template for the inside. Cannot be used with `pdf`.

    - `mailingClass: optional "first_class" or "standard_class" or "express" or 23 more`

      Mailing class for the snap pack.

      - `"first_class"`

      - `"standard_class"`

      - `"express"`

      - `"certified"`

      - `"certified_return_receipt"`

      - `"registered"`

      - `"usps_first_class"`

      - `"usps_standard_class"`

      - `"usps_eddm"`

      - `"usps_express_2_day"`

      - `"usps_express_3_day"`

      - `"usps_first_class_certified"`

      - `"usps_first_class_certified_return_receipt"`

      - `"usps_first_class_registered"`

      - `"usps_express_3_day_signature_confirmation"`

      - `"usps_express_3_day_certified"`

      - `"usps_express_3_day_certified_return_receipt"`

      - `"ca_post_lettermail"`

      - `"ca_post_personalized"`

      - `"ca_post_neighbourhood_mail"`

      - `"ups_express_overnight"`

      - `"ups_express_2_day"`

      - `"ups_express_3_day"`

      - `"royal_mail_first_class"`

      - `"royal_mail_second_class"`

      - `"au_post_second_class"`

    - `mergeVariables: optional map[unknown]`

      Default merge variables for the snap pack.

    - `metadata: optional map[string]`

      Optional key-value metadata.

    - `outsideTemplate: optional string`

      ID of the template for the outside. Cannot be used with `pdf`.

    - `size: optional "8.5x11_bifold_v"`

      Enum representing the supported snap pack sizes.

      - `"8.5x11_bifold_v"`

    - `uploadedPDF: optional string`

      A signed URL to the uploaded PDF, if any.

### Example

```http
curl https://api.postgrid.com/print-mail/v1/campaigns/$ID/send \
    -H 'Content-Type: application/json' \
    -H "X-API-Key: $POSTGRID_PRINT_MAIL_API_KEY" \
    -d '{}'
```

#### Response

```json
{
  "id": "campaign_sqF12lZ1VlBb",
  "createdAt": "2019-12-27T18:11:19.117Z",
  "createdCount": 0,
  "live": true,
  "mailingList": "mailingList",
  "status": "drafting",
  "updatedAt": "2019-12-27T18:11:19.117Z",
  "cheque": {
    "bankAccount": "bankAccount",
    "currencyCode": "CAD",
    "description": "description",
    "envelope": "envelope",
    "letterSettings": {
      "color": true
    },
    "letterTemplate": "letterTemplate",
    "letterUploadedPDF": "https://example.com",
    "logo": "https://example.com",
    "mailingClass": "first_class",
    "memo": "memo",
    "mergeVariables": {
      "foo": "bar"
    },
    "message": "message",
    "metadata": {
      "foo": "string"
    },
    "returnEnvelope": "returnEnvelope",
    "size": "us_letter"
  },
  "defaultSenderContact": "defaultSenderContact",
  "description": "description",
  "errors": [
    {
      "message": "message",
      "type": "processing_error"
    }
  ],
  "letter": {
    "addressPlacement": "top_first_page",
    "attachedPDF": {
      "file": "https://example.com",
      "placement": "before_template"
    },
    "color": true,
    "description": "description",
    "doubleSided": true,
    "envelope": "envelope",
    "envelopeType": "standard_double_window",
    "mailingClass": "first_class",
    "mergeVariables": {
      "foo": "bar"
    },
    "metadata": {
      "foo": "string"
    },
    "paper": "standard",
    "perforatedPage": 1,
    "returnEnvelope": "returnEnvelope",
    "size": "us_letter",
    "template": "template",
    "uploadedPDF": "https://example.com"
  },
  "metadata": {
    "foo": "bar"
  },
  "orderPreviewURL": "https://example.com",
  "postcard": {
    "backTemplate": "backTemplate",
    "description": "description",
    "frontTemplate": "frontTemplate",
    "mailingClass": "first_class",
    "mergeVariables": {
      "foo": "bar"
    },
    "metadata": {
      "foo": "string"
    },
    "paper": "standard",
    "size": "6x4",
    "uploadedPDF": "https://example.com"
  },
  "reportURL": "https://example.com",
  "selfMailer": {
    "description": "description",
    "insideTemplate": "insideTemplate",
    "mailingClass": "first_class",
    "mergeVariables": {
      "foo": "bar"
    },
    "metadata": {
      "foo": "string"
    },
    "outsideTemplate": "outsideTemplate",
    "size": "8.5x11_bifold",
    "uploadedPDF": "https://example.com"
  },
  "sendDate": "2019-12-27T18:11:19.117Z",
  "snapPack": {
    "description": "description",
    "insideTemplate": "insideTemplate",
    "mailingClass": "first_class",
    "mergeVariables": {
      "foo": "bar"
    },
    "metadata": {
      "foo": "string"
    },
    "outsideTemplate": "outsideTemplate",
    "size": "8.5x11_bifold_v",
    "uploadedPDF": "https://example.com"
  }
}
```