Changes to Create and send a one-time send

the response property newsletter/sent_at became nullable for the status 200

added the optional property newsletter/scheduled_at to the response with the 200 status

added the optional property newsletter/send_state to the response with the 200 status

added the optional property newsletter/timezone to the response with the 200 status

added the optional property newsletter/tz_match_enabled to the response with the 200 status

added the new optional request property oneOf[subschema #1: Email]/allOf[#/components/schemas/createNewsletterCommon]/deduped

added the new optional request property oneOf[subschema #1: Email]/allOf[#/components/schemas/createNewsletterCommon]/expires_after

added the new optional request property oneOf[subschema #1: Email]/allOf[#/components/schemas/createNewsletterCommon]/recipient_file_url

added the new optional request property oneOf[subschema #1: Email]/allOf[#/components/schemas/createNewsletterCommon]/tag_ids

added the new optional request property oneOf[subschema #2: SMS]/allOf[#/components/schemas/createNewsletterCommon]/deduped

added the new optional request property oneOf[subschema #2: SMS]/allOf[#/components/schemas/createNewsletterCommon]/expires_after

added the new optional request property oneOf[subschema #2: SMS]/allOf[#/components/schemas/createNewsletterCommon]/recipient_file_url

added the new optional request property oneOf[subschema #2: SMS]/allOf[#/components/schemas/createNewsletterCommon]/tag_ids

added the new optional request property oneOf[subschema #3: Push]/allOf[#/components/schemas/createNewsletterCommon]/deduped

added the new optional request property oneOf[subschema #3: Push]/allOf[#/components/schemas/createNewsletterCommon]/expires_after

added the new optional request property oneOf[subschema #3: Push]/allOf[#/components/schemas/createNewsletterCommon]/recipient_file_url

added the new optional request property oneOf[subschema #3: Push]/allOf[#/components/schemas/createNewsletterCommon]/tag_ids

added the new optional request property oneOf[subschema #4: In-App]/allOf[#/components/schemas/createNewsletterCommon]/deduped

added the new optional request property oneOf[subschema #4: In-App]/allOf[#/components/schemas/createNewsletterCommon]/expires_after

added the new optional request property oneOf[subschema #4: In-App]/allOf[#/components/schemas/createNewsletterCommon]/recipient_file_url

added the new optional request property oneOf[subschema #4: In-App]/allOf[#/components/schemas/createNewsletterCommon]/tag_ids

added the new optional request property oneOf[subschema #5: Webhook]/allOf[#/components/schemas/createNewsletterCommon]/deduped

added the new optional request property oneOf[subschema #5: Webhook]/allOf[#/components/schemas/createNewsletterCommon]/expires_after

added the new optional request property oneOf[subschema #5: Webhook]/allOf[#/components/schemas/createNewsletterCommon]/recipient_file_url

added the new optional request property oneOf[subschema #5: Webhook]/allOf[#/components/schemas/createNewsletterCommon]/tag_ids

added the new optional request property oneOf[subschema #6: Inbox message]/allOf[#/components/schemas/createNewsletterCommon]/deduped

added the new optional request property oneOf[subschema #6: Inbox message]/allOf[#/components/schemas/createNewsletterCommon]/expires_after

added the new optional request property oneOf[subschema #6: Inbox message]/allOf[#/components/schemas/createNewsletterCommon]/recipient_file_url

added the new optional request property oneOf[subschema #6: Inbox message]/allOf[#/components/schemas/createNewsletterCommon]/tag_ids

the request property oneOf[subschema #1: Email]/allOf[#/components/schemas/createNewsletterCommon]/recipients became optional

the request property oneOf[subschema #2: SMS]/allOf[#/components/schemas/createNewsletterCommon]/recipients became optional

the request property oneOf[subschema #3: Push]/allOf[#/components/schemas/createNewsletterCommon]/recipients became optional

the request property oneOf[subschema #4: In-App]/allOf[#/components/schemas/createNewsletterCommon]/recipients became optional

the request property oneOf[subschema #5: Webhook]/allOf[#/components/schemas/createNewsletterCommon]/recipients became optional

the request property oneOf[subschema #6: Inbox message]/allOf[#/components/schemas/createNewsletterCommon]/recipients became optional

added the optional property newsletter/expires_after to the response with the 200 status

added the optional property newsletter/recipient_file_error to the response with the 200 status

added the optional property newsletter/recipient_file_status to the response with the 200 status

added the media type application/json for the response with the status 429