Vayrone PostMaster
The office mail server that works with the email you already have — Google, Hostinger, Zoho, GoDaddy and more.
Keep your current email provider — Google Workspace / Gmail, Hostinger, Titan Email, GoDaddy, Zoho Mail and cPanel hosting or any IMAP/POP3 service. Vayrone PostMaster runs on a server in your office, brings every employee's mail into a local mailbox, serves it to Outlook, Thunderbird, phones and webmail, and adds archiving, backups and mail rules.
See Vayrone PostMaster