Got the following:
Send-MailMessage : Cannot convert 'System.Object[]' to the type 'System.String' required by parameter 'Body'. Specified method is not supported.
At C:\scripts\VMware\DatastoreCheck.ps1:76 char:69
+ Send-MailMessage -To $Email -Subject $MailSubject -BodyAsHtml -Body (ConvertTo-H ...
+ ~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (:) [Send-MailMessage], ParameterBindingException
+ FullyQualifiedErrorId : CannotConvertArgument,Microsoft.PowerShell.Commands.SendMailMessage