## Create Letter `print_mail.letters.create(LetterCreateParams**kwargs) -> Letter` **post** `/print-mail/v1/letters` Create a letter. Note that you can supply one of the following: - HTML content for the letter - A template ID for the letter - A URL or file for a PDF for the letter - Upload the aforementioned PDF file via a multipart form upload request ### Parameters - `from_: LetterCreateWithHTMLFrom` The contact information of the sender. You can pass contact information inline here just like you can for the `to`. - `class ContactCreateWithFirstName: …` - `address_line1: str` The first line of the contact's address. - `country_code: str` The ISO 3611-1 country code of the contact's address. - `first_name: str` - `address_line2: Optional[str]` Second line of the contact's address, if applicable. - `city: Optional[str]` The city of the contact's address. - `company_name: Optional[str]` Company name of the contact. - `description: Optional[str]` An optional string describing this resource. Will be visible in the API and the dashboard. - `email: Optional[str]` Email of the contact. - `force_verified_status: Optional[bool]` If `true`, PostGrid will force this contact to have an `addressStatus` of `verified` even if our address verification system says otherwise. - `job_title: Optional[str]` Job title of the contact. - `last_name: Optional[str]` Last name of the contact. - `metadata: Optional[Dict[str, object]]` See the section on Metadata. - `phone_number: Optional[str]` Phone number of the contact. - `postal_or_zip: Optional[str]` The postal or ZIP code of the contact's address. - `province_or_state: Optional[str]` Province or state of the contact's address. - `skip_verification: Optional[bool]` If `true`, PostGrid will skip running this contact's address through our address verification system. - `class ContactCreateWithCompanyName: …` - `address_line1: str` The first line of the contact's address. - `company_name: str` - `country_code: str` The ISO 3611-1 country code of the contact's address. - `address_line2: Optional[str]` Second line of the contact's address, if applicable. - `city: Optional[str]` The city of the contact's address. - `description: Optional[str]` An optional string describing this resource. Will be visible in the API and the dashboard. - `email: Optional[str]` Email of the contact. - `first_name: Optional[str]` First name of the contact. - `force_verified_status: Optional[bool]` If `true`, PostGrid will force this contact to have an `addressStatus` of `verified` even if our address verification system says otherwise. - `job_title: Optional[str]` Job title of the contact. - `last_name: Optional[str]` Last name of the contact. - `metadata: Optional[Dict[str, object]]` See the section on Metadata. - `phone_number: Optional[str]` Phone number of the contact. - `postal_or_zip: Optional[str]` The postal or ZIP code of the contact's address. - `province_or_state: Optional[str]` Province or state of the contact's address. - `skip_verification: Optional[bool]` If `true`, PostGrid will skip running this contact's address through our address verification system. - `str` - `html: str` The HTML content for the letter. You can supply _either_ this or `template` but not both. - `to: LetterCreateWithHTMLTo` The recipient of this order. You can either supply the contact information inline here or provide a contact ID. PostGrid will automatically deduplicate contacts regardless of whether you provide the information inline here or call the contact creation endpoint. - `class ContactCreateWithFirstName: …` - `class ContactCreateWithCompanyName: …` - `str` - `address_placement: Optional[AddressPlacement]` Enum representing the placement of the address on the letter. - `"top_first_page"` - `"insert_blank_page"` - `attached_pdf: Optional[AttachedPdfParam]` Model representing an attached PDF. - `file: str` The file (multipart form upload) or URL pointing to a PDF for the attached PDF. - `placement: Literal["before_template", "after_template"]` Enum representing the placement of the attached PDF. - `"before_template"` - `"after_template"` - `color: Optional[bool]` Indicates if the letter is in color. - `description: Optional[str]` An optional string describing this resource. Will be visible in the API and the dashboard. - `double_sided: Optional[bool]` Indicates if the letter is double-sided. - `envelope: Optional[str]` The envelope (ID) for the letter. You can either specify a custom envelope ID or use the default `standard` envelope. - `mailing_class: Optional[Literal["first_class", "standard_class", "express", 23 more]]` The mailing class of this order. If not provided, automatically set to `first_class`. - `"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"` - `merge_variables: Optional[Dict[str, object]]` These will be merged with the variables in the template or HTML you create this order with. The keys in this object should match the variable names in the template _exactly_ as they are case-sensitive. Note that these _do not_ apply to PDFs uploaded with the order. - `metadata: Optional[Dict[str, object]]` See the section on Metadata. - `perforated_page: Optional[Literal[1]]` If specified, indicates which letter page is perforated. Currently, only the first page can be perforated. - `1` - `plastic_card: Optional[PlasticCardParam]` Model representing a plastic card. - `size: Literal["standard"]` Enum representing the size of the plastic card. - `"standard"` - `double_sided: Optional[DoubleSided]` Model representing a double-sided plastic card. - `back_html: Optional[str]` The HTML content for the back side of the double-sided plastic card. - `back_template: Optional[str]` The template ID for the back side of the double-sided plastic card. - `front_html: Optional[str]` The HTML content for the front side of the double-sided plastic card. - `front_template: Optional[str]` The template ID for the front side of the double-sided plastic card. - `pdf: Optional[str]` A URL pointing to a PDF file for the double-sided plastic card or the file itself. - `single_sided: Optional[SingleSided]` Model representing a single-sided plastic card. - `html: Optional[str]` The HTML content for the single-sided plastic card. Can specify one of this, `template`, or `pdf`. - `pdf: Optional[str]` A URL pointing to a PDF file for the single-sided plastic card or the PDF file itself. - `template: Optional[str]` The template ID for the single-sided plastic card. - `return_envelope: Optional[str]` The return envelope (ID) sent out with the letter, if any. - `send_date: Optional[Union[str, datetime]]` This order will transition from `ready` to `printing` on the day after this date. You can use this parameter to schedule orders for a future date. - `size: Optional[LetterSize]` Enum representing the supported letter sizes. - `"us_letter"` - `"a4"` ### Returns - `class Letter: …` - `id: str` A unique ID prefixed with letter_ - `address_placement: AddressPlacement` Enum representing the placement of the address on the letter. - `"top_first_page"` - `"insert_blank_page"` - `color: bool` Indicates if the letter is in color. - `created_at: datetime` The UTC time at which this resource was created. - `double_sided: bool` Indicates if the letter is double-sided. - `envelope: str` The envelope (ID) for the letter or the default `standard` envelope. - `from_: Contact` The contact information of the sender. - `id: str` A unique ID prefixed with contact_ - `address_line1: str` The first line of the contact's address. - `address_status: Literal["verified", "corrected", "failed"]` One of `verified`, `corrected`, or `failed`. - `"verified"` - `"corrected"` - `"failed"` - `country_code: str` The ISO 3611-1 country code of the contact's address. - `created_at: datetime` The UTC time at which this resource was created. - `live: bool` `true` if this is a live mode resource else `false`. - `object: Literal["contact"]` Always `contact`. - `"contact"` - `updated_at: datetime` The UTC time at which this resource was last updated. - `address_errors: Optional[str]` A series of human-readable errors/warnings that were raised when running the provided address through our address verification. - `address_line2: Optional[str]` Second line of the contact's address, if applicable. - `city: Optional[str]` The city of the contact's address. - `company_name: Optional[str]` Company name of the contact. - `description: Optional[str]` An optional string describing this resource. Will be visible in the API and the dashboard. - `email: Optional[str]` Email of the contact. - `first_name: Optional[str]` First name of the contact. - `force_verified_status: Optional[bool]` If `true`, PostGrid will force this contact to have an `addressStatus` of `verified` even if our address verification system says otherwise. - `job_title: Optional[str]` Job title of the contact. - `last_name: Optional[str]` Last name of the contact. - `metadata: Optional[Dict[str, object]]` See the section on Metadata. - `phone_number: Optional[str]` Phone number of the contact. - `postal_or_zip: Optional[str]` The postal or ZIP code of the contact's address. - `province_or_state: Optional[str]` Province or state of the contact's address. - `skip_verification: Optional[bool]` If `true`, PostGrid will skip running this contact's address through our address verification system. - `live: bool` `true` if this is a live mode resource else `false`. - `mailing_class: Literal["first_class", "standard_class", "express", 23 more]` The mailing class of this order. This determines the speed and cost of delivery. See `OrderMailingClass` for more details. - `"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"` - `object: Literal["letter"]` Always `letter`. - `"letter"` - `send_date: datetime` This order will transition from `ready` to `printing` on the day after this date. For example, if this is a date on Tuesday, the order will transition to `printing` on Wednesday at midnight eastern time. - `size: LetterSize` Enum representing the supported letter sizes. - `"us_letter"` - `"a4"` - `status: Literal["ready", "printing", "processed_for_delivery", 2 more]` See `OrderStatus` for more details on the status of this order. - `"ready"` - `"printing"` - `"processed_for_delivery"` - `"completed"` - `"cancelled"` - `to: Contact` The recipient of this order. This will be provided even if you delete the underlying contact. - `updated_at: datetime` The UTC time at which this resource was last updated. - `attached_pdf: Optional[AttachedPdf]` Model representing an attached PDF. - `file: str` The file (multipart form upload) or URL pointing to a PDF for the attached PDF. - `placement: Literal["before_template", "after_template"]` Enum representing the placement of the attached PDF. - `"before_template"` - `"after_template"` - `cancellation: Optional[Cancellation]` The cancellation details of this order. Populated if the order has been cancelled. - `reason: Literal["user_initiated", "invalid_content", "invalid_order_mailing_class"]` The reason for the cancellation. - `"user_initiated"` - `"invalid_content"` - `"invalid_order_mailing_class"` - `cancelled_by_user: Optional[str]` The user ID who cancelled the order. - `note: Optional[str]` An optional note provided by the user who cancelled the order. - `description: Optional[str]` An optional string describing this resource. Will be visible in the API and the dashboard. - `html: Optional[str]` The HTML content for the letter. You can supply _either_ this or `template` but not both. - `imb_date: Optional[datetime]` The last date that the IMB status was updated. See `imbStatus` for more details. - `imb_status: Optional[Literal["entered_mail_stream", "out_for_delivery", "returned_to_sender"]]` The Intelligent Mail Barcode (IMB) status of this order. Only populated for US-printed and US-destined orders. This is the most detailed way to track non-express/certified orders. - `"entered_mail_stream"` - `"out_for_delivery"` - `"returned_to_sender"` - `imb_zip_code: Optional[str]` The most recent ZIP code of the USPS facility that the order has been processed through. Only populated when an `imbStatus` is present. - `merge_variables: Optional[Dict[str, object]]` These will be merged with the variables in the template or HTML you create this order with. The keys in this object should match the variable names in the template _exactly_ as they are case-sensitive. Note that these _do not_ apply to PDFs uploaded with the order. - `metadata: Optional[Dict[str, object]]` See the section on Metadata. - `pdf_workflow_run: Optional[str]` The ID of the PDF workflow run that created the letter, if any. - `perforated_page: Optional[Literal[1]]` If specified, indicates which letter page is perforated. Currently, only the first page can be perforated. - `1` - `plastic_card: Optional[PlasticCard]` Model representing a plastic card. - `size: Literal["standard"]` Enum representing the size of the plastic card. - `"standard"` - `double_sided: Optional[DoubleSided]` Model representing a double-sided plastic card. - `back_html: Optional[str]` The HTML content for the back side of the double-sided plastic card. - `back_template: Optional[str]` The template ID for the back side of the double-sided plastic card. - `front_html: Optional[str]` The HTML content for the front side of the double-sided plastic card. - `front_template: Optional[str]` The template ID for the front side of the double-sided plastic card. - `pdf: Optional[str]` A URL pointing to a PDF file for the double-sided plastic card or the file itself. - `single_sided: Optional[SingleSided]` Model representing a single-sided plastic card. - `html: Optional[str]` The HTML content for the single-sided plastic card. Can specify one of this, `template`, or `pdf`. - `pdf: Optional[str]` A URL pointing to a PDF file for the single-sided plastic card or the PDF file itself. - `template: Optional[str]` The template ID for the single-sided plastic card. - `return_envelope: Optional[str]` The return envelope (ID) sent out with the letter, if any. - `template: Optional[str]` The template ID used for the letter. You can supply _either_ this or `html` but not both. - `tracking_number: Optional[str]` The tracking number of this order. Populated after an express/certified order has been processed for delivery. - `uploaded_pdf: Optional[str]` If a PDF was uploaded for the letter, this will contain the signed link to the uploaded PDF. - `url: Optional[str]` PostGrid renders a PDF preview for all orders. This should be inspected to ensure that the order is correct before it is sent out because it shows what will be printed and mailed to the recipient. Once the PDF preview is generated, this field will be returned by all `GET` endpoints which produce this order. This URL is a signed link to the PDF preview. It will expire after a short period of time. If you need to access this URL after it has expired, you can regenerate it by calling the `GET` endpoint again. ### Example ```python import os from postgrid import PostGrid client = PostGrid( print_mail_api_key=os.environ.get("POSTGRID_PRINT_MAIL_API_KEY"), # This is the default and can be omitted ) letter = client.print_mail.letters.create( from_="contact_123", html="Content", to="contact_123", ) print(letter.id) ``` #### Response ```json { "id": "letter_123456", "object": "letter", "status": "ready", "live": false, "to": { "id": "contact_pxd7wnnD1xY6H6etKNvjb4", "object": "contact", "live": false, "companyName": "PostGrid", "addressLine1": "90 CANAL ST STE 600", "city": "BOSTON", "provinceOrState": "MA", "postalOrZip": "90210-1234", "countryCode": "US", "skipVerification": false, "forceVerifiedStatus": false, "addressStatus": "verified", "createdAt": "2022-02-16T15:08:41.052Z", "updatedAt": "2022-02-16T15:08:41.052Z" }, "from": { "id": "contact_pxd7wnnD1xY6H6etKNvjb4", "object": "contact", "live": false, "companyName": "PostGrid", "addressLine1": "90 CANAL ST STE 600", "city": "BOSTON", "provinceOrState": "MA", "postalOrZip": "90210-1234", "countryCode": "US", "skipVerification": false, "forceVerifiedStatus": false, "addressStatus": "verified", "createdAt": "2022-02-16T15:08:41.052Z", "updatedAt": "2022-02-16T15:08:41.052Z" }, "size": "us_letter", "doubleSided": true, "color": false, "sendDate": "2020-11-12T23:23:47.974Z", "createdAt": "2020-11-12T23:23:47.974Z", "updatedAt": "2020-11-12T23:23:47.974Z", "mailingClass": "first_class", "envelope": "standard", "addressPlacement": "top_first_page", "html": "Content" } ```