Show HN: I made email signatures less boring

Esigna is a free AI-powered email signature generator that creates personalized signatures with optional AI-generated "bobblehead" avatars based on uploaded photos. The tool works across Gmail, Outlook, Apple Mail, and other email clients, offering eight professional layouts and allowing users to export signatures as PNGs at no cost, with optional paid credits only needed for avatar generation. The service emphasizes making email signatures stand out while remaining simple to use, with profession-specific templates and customization options for colors, fonts, and contact information.