I sometimes get the same spam email from 3 or 4 apparently different senders. Whether there is someone who sells on emails and lists of victims I don't know. I have one email address I use just for family and key contacts and get no spam there, and others I use where I am less trusting of contacts- and I too get many, but nearer 10 a day than 100 in my main alternative account. I did open one for filling in a survey once and out of curiousity checked recently and am getting about 50 a day in that now.