The following operations are supported. For a formal definition, please review the Service Description.

• CancelDelivery
  The CancelDelivery() method is a way to cancel fulfillment of a letter still not delivered to the postal service. Cancellation may take up to a few minutes to succeed. If funds were deducted from the account, they will be refunded immediately.
• GetLetterDetails
  The GetLetterDetails() method is a way to get a detailed report regarding a letter.
• GetLetterDetailsV2
  The GetLetterDetails() method is a way to get a detailed report regarding a letter.
• GetLetterStatus
  The GetLetterStatus() method is the simplest way to get a status report of a single letter sent through the PostalMethods service.
• GetLetterStatusV2
  The GetLetterStatus() method is the simplest way to get a status report of a single letter sent through the PostalMethods service.
• GetLetterStatusV2_Multiple
  The GetLetterStatus_Multiple() method is a way to get a status report of multiple letters - in a single Web Service request.
• GetLetterStatusV2_Range
  The GetLetterStatus_Range() method is a way to get a status report of multiple letters - by ID range - in a single Web Service request.
• GetLetterStatus_Multiple
  The GetLetterStatus_Multiple() method is a way to get a status report of multiple letters - in a single Web Service request.
• GetLetterStatus_Range
  The GetLetterStatus_Range() method is a way to get a status report of multiple letters - by ID range - in a single Web Service request.
• GetPDF
  The GetPDF() method is a way to get the PDF file used for printing the letter as a binary file.
• SendLetter
  The SendLetter() method is the simplest way to send a letter through the PostalMethods service.
• SendLetterAndAddress
  The SendLetterAndAddress() method is the simplest way to send a letter through the PostalMethods service.
• SendLetterAndAddressV2
  The SendLetterAndAddress() method is the simplest way to send a letter through the PostalMethods service.
• SendLetterV2
  The SendLetter() method is the simplest way to send a letter through the PostalMethods service.
• SendPostcardAndAddress
  The SendPostcardAndAddress() method is the simplest way to send postcards.
• UploadFile
  The UploadFile() method is used to upload files for later usage.