Seems CC is using a different email validator for the Bulk Activity API versus the online UI. I wasn't able to upload a list containing addresses similar to "firstname.lastname@example.org" but was able to edit an entry via the CC edit contact interface. Is there a plan to sych both of these systems up with the same email validator?
Thanks for mentioning this. As that is not a valid email address (note it doesn't have a valid top level domain), we should not be allowing it through our web UI. I will bring this up with that team to get that updated. We do plan on unifying the validation for all of our fields as we update our software going forward and apologize in any cases where that isn't true today.