To support non US-ascii characters the message need to be sent with UTF-8 charset specified.
Content-Type set based on specifications found in official API documentation https://pushover.net/api#messages
Thanks for the PR! I doubt I'll be making many changes to this module in the foreseeable future. Check out the modules on the PowerShell Gallery for more recent content by other developers
To support non US-ascii characters the message need to be sent with UTF-8 charset specified. Content-Type set based on specifications found in official API documentation https://pushover.net/api#messages