Self-hosted
Neutron: A Libre Mail server for Proton Webmail client
Neutron is a self-hosted IMAP and SMTP mail server for ProtonMail client. ProtonMail is an open-source webmail client distributed and licensed under GNU "General Public License" version 3. Neutron Mail server features: 1. IMAP support: reads and stores all messages on server. 2. SMTP support: sending messages. 3.