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Customer Voice 'send a survey' - connector bug - valid email address rejected as invalid

I have found a bug with the 'Send a Survey' action on the Customer Voice connector for Power Automate. 


When I specify the 'to' field with an email address that has a '+' in it, the connector returns a response that "Paramter with name Id contains invalid email address". 

The connector works fine when the email address does not have a + in it. Screenshots below for both scenarios. 


To compare with using the Customer Voice website directly, I can enter and sent an email with a plus in. This makes me think this is a bug with the connector specifically. 

Plus aliasing is a valid way to specify an email address - even Exchange Online supports it now. 


I would like this bug fixed so I can deploy my flow and surveying power app. I cannot see any viable workarounds here (apart from just accepting the risk not doing communicating with some customers, which is not acceptable). 


Best regards,



Works fine: 


Doesn't work fine: 








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