Mail Designer 365

Mail Designer 365 is a macOS‑native email design application that lets marketers and designers create professional HTML newsletters in minutes. Featuring a visual drag‑and‑drop editor, a library of over 230 mobile‑optimized templates, and automatic responsive layout handling, it eliminates hand‑coding. Users can send campaigns directly, track performance, and collaborate with team members through shared libraries and approval workflows, making it a complete solution for email marketing on Mac.