Hacking mail account for Marketing!

Hacking email account is also done for purposes other than knowing the mail contents. Here is an example: it has been used for marketing electronic products! Yes, one person has hacked the password of my relatives email account. He/she has not only accessed the account's contents but also operated it and sent emails to all the Contacts in the Address Book (- including me!), as if he/she was my relative! But the contents of the mail endorsed an electronic product that he/she recently bought(!) at a cheaper rate! Here find one of those mail's contents:

I found out the hacking of the account when I contacted and inquired my relative by phone regarding the above mail's contents whether he bought the electronic item, and also about his sending such a mail. Spelling mistakes also pointed to the hacking. I reported about it to my relative and he immediately changed the password to a stronger one and protected his account.