- Plesk Onyx for Windows
- Plesk Onyx 17.5 for Windows
Does Plesk Onyx support SmarterMail 16?
No, it does not. Plesk Onyx (both versions 17.0.17 and 17.5.3) supports SmarterMail up to version 15.x.
The support of SmarterMail 16 is planned to be added in one of the next Plesk releases. Keep checking the release notes, available here, for announcements: https://docs.plesk.com/release-notes/onyx/change-log/ .