Stalwart v1.0: The Fastest Mail Server on the Planet

Stalwart v1.0, a complete mail and collaboration server built in Rust over five years, has been released as the first stable version with a focus on performance optimization and data stability. The development team spent months profiling and rewriting core components using advanced CPU techniques like SIMD and SWAR to maximize speed, resulting in close to 200 commits that made the server significantly faster and lighter. The release includes new features such as full-text search in PDFs and office documents, plus a finalized database schema that eliminates disruptive migrations for future upgrades.