Hi,
There is a way but it's not simple.
You need to use AcyMailing enterprise and configure a auto filter so that it triggers when orders are cancelled and send an email.
More information on filters and auto filters here:
www.acyba.com/en/support/documentation/1...ymailing-filter.html
(you can look at the virtuemart plugin documentation, it's the same as the one for HikaShop plugin)