Martin Casado Uses Grok to Update Subscriptions

Martin Casado, a general partner at a16z, posted on X that he received a replacement credit card and that he asked Grok to scan his personal email. The posts described the bot identifying dozens of subscriptions whose payments had started to bounce and refreshing the billing details. Aditya Agarwal replied asking whether the approach actually works, and Casado confirmed with a one-word reply. Amit Jain called the example epic. The exchange consists of public posts on X describing Casado's reported use of the tool.