I want to use an email address that includes the " & " symbol in my Sender Email Address. However Luminate shows the error "The sender address you provided is not valid."
No, currently there is no way to use an email address with an ampersand, e..g. firstname.lastname@example.org, for the Sender Email Address in an Email Campaign email message. Although some special characters are permitted in this field, the " & " symbol is not accepted. This is expected behavior.
Note: Email addresses that include the " & " symbol are still accepted when creating constituent records in Constituent360.