Early this year, the United States Postal Service (USPS) announced the elimination of FTP (File Transfer Protocol) from their business practices and policies—a change that strengthens the security of their data transmissions and addresses recent audit findings.
The change is still in transition for now, but after August 31, 2017, mailers and shippers will need to send data to the USPS using one of the following secure communication methods: PDX (Parcel Data Exchange), SFTP (Secure File Transfer Protocol), or AS2 (Applicability Statement 2). This applies to SSF, EMM, BPOD, DEXTRO, and ERR files.
Any of these approved methods will work. The USPS lists PDX as preferred, allowing business customers and third-party vendors to use PDX through their web application. But for those who can’t or don’t want to switch to PDX, SFTP or AS2 are just as secure, cost-friendly, and easy to implement.