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Kosh is built and supported by dedicated engineers. Every message gets a real reply.

Email support

support@kosh.uno

Bug reports, billing questions, license issues, or anything else.

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@koshmail

Quick updates, feature previews, and behind-the-scenes development.

Feature requests

Feedback

Have an idea or something you'd love to see in Kosh? Let us know.

When reporting a bug, include:

  • Kosh version or browser / mail client
  • OS version (macOS, Windows, iOS, Android)
  • Steps to reproduce the issue
  • What you expected vs. what happened

We typically reply within 1–2 business days. For how-tos, see the guides; for how sync and backups work, the FAQ.

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