renders merge_variables into HTML with syntax that supports objects, conditionals, and loops

changed pagination model of GET endpoints for postcards, letters, checks, addresses, bank accounts, templates, and template versions to a cursor-based model

offset parameter on these endpoints has been removed

previous_url and next_url response fields have been added

remove rate-limit headers

updated letter template which includes a white box behind the address block area to ensure deliverability

US verification deliverability value no_match deprecated and merged into undeliverable

US verification deliverability value deliverable_extra_secondary is split into deliverable_unnecessary_unit and deliverable_incorrect_unit

US verification deliverability value deliverable_missing_secondary renamed to deliverable_missing_unit

US verifications zip_code special values deprecated in favor of more comprehensive primary_line special values

enforce 50 character limit on the sum of address_line1 and address_line2 for check recipients

split extra_secondary_information into extra_secondary_designator and extra_secondary_number for /v1/us_verifications

remove support for the /v1/states endpoint

remove support for the /v1/countries endpoint

remove support for the message field from the POST /v1/postcards endpoint

renames input parameters and restructures response object for /v1/intl_verifications

automatically standardizes and corrects US addresses created via POST /v1/addresses. non-US addresses will be standardized into uppercase only.

automatically standardizes and corrects inline US addresses used in POST /v1/postcards, POST /v1/letters, and POST /v1/checks. non-US addresses will be standardized into uppercase only.

enforce 40 character limit on name and company for all addresses

enforce 64 character limit on address_line1 and address_line2 for US addresses

enforce 10,000 character limit on HTML strings

rename data parameter for all products to merge_variables

discontinues the /v1/verify endpoint - please use /v1/us_verifications or /v1/intl_verifications instead

unnest tracking object from postcard, letter, and check response objects

adds address_placement parameter to letters that defaults to top_first_page, template is no longer allowed

removes tracking numbers that do not provide any consumer-facing tracking information

removes link from tracking responses

requires account_type when creating a bank account

renames the count parameter to limit for all list endpoints

removes the next_url and previous_url from list responses

adds size parameter to postcards that defaults to 4x6, setting is no longer allowed

remove price from letters

remove pages from letters

remove price from postcards

renamed file parameter to check_bottom for checks

remove bank_address from bank_accounts

remove account_address from bank_accounts and add from to checks

remove price from checks

use the new HTML renderer for all products

remove the status field from all endpoints

errors on all endpoints are now single objects instead of arrays

full_bleed is no longer allowed for postcards, objects, and area mails - all products are now full_bleed by default

template is no longer allowed for postcards - all postcards must adhere to the template

name is no longer allowed for area mails, bank accounts, checks, jobs, objects, and postcards - it has been replaced by description

setting ID's 100 and 101 are no longer supported for objects - please use the Simple Letter Service instead

service is no longer supported for jobs

all boolean parameters now return true/false instead of 1/0

double_sided is no longer allowed for objects - all products are default double sided if more than one page is allowed

template is no longer allowed for objects

removed concept of packaging

signatory is now a required field when creating a bank account

bank_code is no longer an allowed field when creating a bank account

service_id parameter replaced by service parameter in /jobs

setting_id parameter replaced by setting parameter in /objects