Tool to check the current account balance in DocuPost. Use this before sending letters or postcards to verify sufficient funds are available.

Send a physical letter via U.S. mail using DocuPost. Requires recipient address (to_name, to_address1, to_city, to_state, to_zip), sender address (from_name, from_address1, from_city, from_state, from_zip), and a PDF document URL. Example: send_letter( to_name='John Doe', to_address1='123 Main St', to_city='Los Angeles', to_state='CA', to_zip='90210', from_name='Sender Corp', from_address1='456 Sender Rd', from_city='Los Angeles', from_state='CA', from_zip='90210', pdf='https://example.com/document.pdf' )

Tool to send a postcard via U.S. mail with specified recipient, sender, and front/back images. Use after confirming recipient addresses and design URLs. Example: send_postcard(to_name='John Doe', ..., front_image='https://...', back_image='https://...')