Yes, Texting 'USPS' to 50409 Sends a Letter to Your Political RepYes, Texting 'USPS' to 50409 Sends a Letter to Your Political RepYou've seen it popping up on social media. Does texting 'USPS' to 50409 send a letter to your political representative to support the USPS? Yes, it does. Here's how.Brandon CoatesBrandon Coates