This isues made me use thunderbird as the same thing was happening in outlook . I downloaded thunderbird set up 3 email addresses on it, lets name them A, B, C. Now whenever i receive an email in address A inbox it also is shown on address B inbox. But if i receive one on address C it does not show also in address B inbox. A B C is the order in which i've set up the accounts. -Also B and C have same domain . -A has diffrent domain than B and C. -Also when sending emails the same thing happens.