SignetMail manages email signatures centrally for Microsoft 365 and Google Workspace. Each signature is built from your company directory (Entra ID or Google Directory), so when a job title or phone number changes, every signature follows automatically. Works in Outlook (desktop, web, mobile) and Gmail. Run the server yourself with Docker or the Windows installer, or ask for EU hosting. Made in Slovenia. Currently in public beta and free during the beta. https://signetmail.si