Hey Product Hunt 👋 I built Mailwynx after one too many mailbox migrations where the "standard" tools meant uploading a client's entire email to someone else's cloud and paying $10–12 per mailbox, every project, forever. Mailwynx flips that: it's a single Windows app that runs on your own machine and moves mail (full folder structure), calendars and contacts between Microsoft 365, Google Workspace and IMAP — in both directions. Your client's data never leaves your environment. No telemetry. No subscription. You buy mailboxes in one-time packs and top up when you need more. First 3 mailboxes are free to try. It's built for MSPs and internal IT doing tenant-to-tenant moves and cutovers. I'd genuinely love feedback — especially on what would make it a no-brainer for your next migration. Happy to answer anything!

Mailwynx

Self-hosted mailbox migration for MSPs

Self-hosted mailbox migration for MSPs