Create Letter
Creates a letter in PostGrid Print & Mail.
Query
Comma-separated response fields to include.
Body
The recipient contact ID or recipient payload.
The sender contact ID or sender payload.
Inline HTML content for the letter.
The PostGrid template ID to use for the letter.
A PDF URL or PDF source for the letter.
Template merge variables for the letter.
An optional description visible in the API and dashboard.
Custom metadata for this letter.
Schedule the letter for a future send date.
The mailing class for the letter.
The page size for the letter.
How to place the address window content.
Print the letter double sided.
Print the letter in color.
The page number to perforate for the letter.
Envelope settings for the letter.
The return-envelope configuration for the letter.
Attach an additional PDF to the letter.
Plastic card settings for the letter.