Hi there, I start to do affiliate marketing and I havent fully understood what it is about email marketing. I understand that what affiliates do they have like websites related to the specific niche, and they send emails to thier subscribers then the email pass the spam filter and the email made it safely to their inbox. but what I did not understand is how Gmail for example know I have subscribed to a certain website? for example I could just buy an email list and send mass email to everyone on there. try to confuse google with software which sends diffrent mails from different SMTP servers and thats it. or am I wrong?