Building profiles of senders can be necessary, e.g., for detecting spammer accounts.
Also, email is transmitted in plain text. Sending an email is more like shouting to your friends in the street, rather than putting a letter into an envelope mailed to the recipient. Thus, I don't think an explicit consent is needed.
That said, I understand that fair use of such information is a concern.
Also, email is transmitted in plain text. Sending an email is more like shouting to your friends in the street, rather than putting a letter into an envelope mailed to the recipient. Thus, I don't think an explicit consent is needed.
That said, I understand that fair use of such information is a concern.