Request for valid email when one is already in system

I have a client to whom I am trying to email an invoice directly from IN.

I keep receiving the following message, evrn though I know the one on file is correct:

Please provide a valid email address

Anyone have any insight?


Maybe there’s a blank space at the end?

If you want to send the email address to I can try to test with it.

Howdy. Was this resolved?

Getting the same issue