Stalwart v1.0: The Fastest Mail Server on the Planet
Summary
Stalwart v1.0 is presented as a high performance mail and collaboration server with a focus on speed and data stability. The article details SIMD and SWAR based optimizations, a redesigned storage and cache stack, and a new full text search engine, backed by benchmarks against Postfix and Dovecot. It also highlights security and interoperability features such as DKIM2, OAuth, and metadata, plus migration paths to v1.0.