Why can't I import @info...email addresses?
Role-based email addresses such as admin@, sales@ and info@ can often be forwarded to several people within an organisation or just sit untouched in an inbox. Either way this can cause you problems including wasting credits and increasing the possibility of being blacklisted.
As the removal of role based emails from lists is becoming much more of an industry standard, little green plane has chosen to stop the upload of role-based emails into data lists.