Thank you for your interest in MailVault.
You may download the appropriate build from here.
You may also wish to check out the MailVault Setup document, that will help you get started with MailVault in just a few minutes.
In case you need to manually install Python 3.8.11 on your system, you can follow these instructions for Ubuntu and for CentOS.
In case of any difficulties, please check the support section and do not hesitate to contact us.